FCC ID: 2AFOS-WT018684-S5 WIFI BLE Module

Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 WT018684-S5 Datasheet Version 1.0.1 July 8, 2022 Wireless-Tag Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 1 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 2.4GHz Wi-Fi(802.11b/g/n) + Bluetooth 5(LE) module Built around ESP8684 of SoCs, 32-bit RISC-V single-core processor Flash up to 4 MB, rich set of peripherals On-board PCB antenna and external antenna connector Ordering Code WT018684-S5-N1 WT018684-S5-N2 WT018684-S5-N4 Chip Embedded ESP8684 ESP8684 ESP8684 Flash(MB) 1 2 4 PSRAM(MB) 0 0 0 Antenna PCB PCB PCB Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 2 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 About the Document This document provides users with WT018684-S5 specification. Document Version Please go to the official website of wireless-tag to download the latest version of the document. Revision History Please go to the Revision History page to view the revisions. Disclaimer of Warranties and Copyright Notice The information in this article, including the URL address for reference, is subject to change without notice. The Documentation is provided "as is" without warranty, including any warranty of merchantability, fitness for a particular purpose, or non-infringement, and any warranties of any proposal, specification, or sample referred elsewhere. This document is not responsible for any infringement of any patent rights arising from the use of the information in this document. Nothing in this document grants, by estoppel or otherwise, any license to use the Intellectual Property Rights, whether express or implied. All trade names, trademarks and registered trademarks mentioned herein are the property of their respective owners and are hereby declared. Copyright 2022 wireless-tag. All rights reserved. Note The contents of this manual are subject to change due to product version upgrades or other reasons. Shenzhen Wireless-Tag Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Shenzhen Wireless-Tag Technology Co., Ltd. does its best to provide accurate information in this manual. However, Shenzhen Wireless-Tag Technology Co., is completely correct. All Ltd. does not ensure that the content of the manual statements in this manual , information and advice do not constitute any express or implied warranties. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 3 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 Revision History No. Version Changes Notes Editor Date 1 2 V1.0.0 V1.0.1 C M First release GUO April 27, 2022 Errata, correction 5.1 GUO July.8,2022

*ChangesCcreateAaddMmodifyDdelete Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 4 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 Table of Contents 1 Module Overview .............................................................................................................................6 1.1 Features ................................................................................................................................ 6 1.2 Description ............................................................................................................................7 1.3 Applications .......................................................................................................................... 8 2 Block Diagram ................................................................................................................................ 10 3 Pin Definitions ................................................................................................................................11 3.1 Pin Layout ........................................................................................................................... 11 3.2 Pin Description ....................................................................................................................11 3.3 Strapping Pins ..................................................................................................................... 12 4 Electrical Characteristics ................................................................................................................ 14 4.1 Absolute Maximum Ratings ................................................................................................14 4.2 Recommended Operating Conditions ................................................................................14 5 Application Notes ...........................................................................................................................15 5.1 Module Dimensions ............................................................................................................15 5.2 Reflow Profile ......................................................................................................................16 5.3 Module Schematics ............................................................................................................ 16 5.4 Peripheral Schematics ........................................................................................................ 17 6 Product Trial ................................................................................................................................... 18 Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 5 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 1 Module Overview 1.1 Features MCU ESP8684 SoC embedded, 32-bit RISC-V single-core processor, up to 120 MHz 576 KB ROM 272 KB SRAM 16KB for cache SIP flash Flash controller with cache Supports flash in Circuit Programming (ICP) Wi-Fi IEEE 802.11 b/g/n compliant Supports 20MHz bandwidth in 2.4GHz band 1T1R mode with data rates up to 72.2Mbps Data rates up to 72.2 Mbps in 802.11n mode Frame aggregation (TX/RX A-MPDU, TX/RX A-MSDU) Immediate Block ACK Fragmentation and defragmentaion Transmit opportunity(TXOP) Automatic Beacon monitoringhardware TSF) Wireless multimediaWMM 3 virtual Wi-Fi interfaces Antenna diversity Supports external power amplifier Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode NBCE power:14.68dbm Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 6 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 Note that when ESP8684 scans in Station mode, the SoftAP channel will change along with the Station channel. Bluetooth Bluetooth low energyBluetooth LE:Bluetooth 5 High power mode Speed: 125kbps, 500kbps, 1Mbps, 2Mbps Advertising Extensions Multiple Advertisement Sets Channel Selection Algorithm #2 Internal co-existence mechanism between Wi-Fi and Bluetooth to share the same antenna NBCE power:5.34dbm Hardware Peripheral interfaces: 14xGPIO, 3xSPI, 2xUART, I2C master, LED PWM controller with up to 6 channels, General DMA controller (GDMA) with 1 receive channel and 1 transmit channel Analog interfaces: 112-bit SAR ADCs with up to 5 channels, 1x temperature sensor Timers: 1x54-bit general-purpose timer, 2x watchdog timers, 1x52-bit system timer 1.2 Description The WT018684-S5 module is based on ESP8684, which is a highly integrated and low-power system-on-chip (SoC) supporting Wi-Fi and Bluetooth, designed for Internet of Things (IoT), mobile devices, wearable electronics, smart homes, such as wake word detection, speech recognition, face recognition, smart control panels, smart speakers, etc. The ESP8684 chip features state- of -the -art power and RF Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 7 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 performance, complying with the Wi-Fi IEEE802.11b/g/n protocol and BLE 5.0. The chip integrates a 32-bit RISC-V single-core processor, up to 120 MHz. You can power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for changes or crossing of thresholds. It supports a secondary development without the need for additional microcontrollers or processors. The chip supports a variety of low-power working states, which can meet the power consumption requirements of various application scenarios. The unique features of the chip, such as fine-grained clock gating, dynamic voltage and frequency scaling, and RF output power adjustment, can achieve the best balance between communication distance, communication rate and power consumption. The WT018684-S5 module integrate a rich set of peripherals, ranging from UARTSPII2S I2CADCtemperature sensor, GPIO, LED PWM controller, GDMA, general-purpose timer, watchdog timer. The WT018684-S5 module have a variety of unique hardware security features ensured by the cryptographic hardware accelerators that support AES, SHA and RSA algorithms. RNG, HMAC and digital signature modules provide more security performance. Other security features include flash encryption, secure boot, signature verification. Reliable security features make the SoC perfect for a variety of encryption products. The WT8684-S5 module supports Bluetooth Low Energy:

Bluetooth5, Bluetooth mesh. Bluetooth speed supports: 125kbps, 500kbps, 1Mbps, 2Mbps. It aslo supports advertising extensions, multiple advertisement, channel selection. WT018684-S5 is generic Wi-Fi+Bluetooth LE MCU-based module, integrated with ESP8684 of SoCs. 1.3 Applications Generic Low-power IoT Sensor Cameras for Video Streaming Hubs Over-the-top (OTT) devices Generic Low-power IoT Data Speech recognition Loggers Image recognition Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 8 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 Mesh network Home automation Health/Medical/Nursing Wi-Fi enabled toys Smart home control panel Wearable electronics Smart building Retail & Catering Applications Industrial automation Smart POS machines Smart agriculture Audio device Smart door lock Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 9 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 2 Block Diagram Figure 1 Block Diagram Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 10 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 3 Pin Definitions 3.1 Pin Layout Figure 2 Pin Layout 3.2 Pin Description Table 1 Pin Definition and Description Type Index Name 1 2 3 4 5 6 7 IO0 IO1 EN IO2 IO4 IO5 IO6 I/O/T I/O/T I I/O/T I/O/T I/O/T I/O/T Power Domain VDD3P3_RTC VDD3P3_RTC VDD3P3_RTC VDD3P3_RTC VDDP3_CPU VDDP3_CPU VDDP3_CPU Function the GPIO0,ADC1_CHO GPIO0,ADC1_CH1 High: on, enables chip. Low: off, the chip powers off. Note: Do not leave the CHIP_EN pin floating. GPIO2,ADC1_CH2FSPIQ GPIO4 ADC1_CH4,FSPIHD,MTMS GPIO5,FSPIWP,MTDI GPIO6,FSPICLK,MTCK Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 11 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 8 9 10 11 12 13 14 15 16 17 18 3V3 GND IO7 IO8 IO9 IO10 IO3 RXDO TXDO GPIO18 NC PA G I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T Analog power supply Ground,FSPID,MTDP GPIO7 GPIO8 GPIO9 GPIO10,FSPICSO GPIO3,ADC1_CH3 GPIO19,U0RXD GPIO20,U0TXD

VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDD3P3_CPU GPIO18

Dangling pins PA: Analog power supply PD: Digital IO power supply I: Input O: Output T: High impedance The pin function in this table refers only to some fixed settings and do not cover all cases for signals that can be input and output through the GPIO matrix. 3.3 Strapping Pins ESP8684 has two strapping pins:

GPIO8 GPIO9 Software can read the values of GPIO8 and GPIO9 from GPIO_STRAPPING field in GPIO_STRAP_REG register. During the chips system reset, the latches of the strapping pins sample the voltage level as strapping bits of 0 or 1, and hold these bits until the chip is powered down or shut down. There are several types of system resets:

Power-on reset RTC watchdog reset Brownout reset analog super watchdog reset By default, GPIO9 is connected to the internal weak pull-up resistor. If GPIO9 is not connected or connected to an external high-impedance circuit, the latched bit value will be 1. To change the strapping bit values, you can apply the external pull-down/pull-up resistances, or use the host MCUs GPIOs to control the voltage level of these pins when powering on ESP8684 series. After reset, the strapping pins work as normal-function pins. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 12 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 See Table 2 for detailed booting configurations of the strapping pins Table 2 Strapping Pins Booting Mode Pin GPIO8 GPIO9 Default N/A Internal weak pull-up SPI Boot Download Boot Dont care 1 1 0 Enabling/Disabling ROM Messages Print During Booting Pin Default Function GPIO8 N/A When the value of eFuse field EFUSE_UART_PRINT_CONTROL is 0 (default), print is enabled and not controlled by GPIO8. 1, if GPIO8 is 0, print is enabled; if GPIO8 is 1, it is disabled. 2, if GPIO8 is 0, print is disabled; if GPIO8 is 1, it is enabled. 3, print is disabled and not controlled by GPIO8. The strapping combination of GPIO8=0 and GPIO9=0 is invalid. Figure 3 shows the setup and holding times of the strapping pins before and after the CHIP_EN signal goes high. Details about the parameters are listed in Table 3. t0 t1 VIL_nRST CHIP_EN VIH Strapping pin Table 3 Parameter Descriptions of Setup and Hold Times for the Strapping Pins Parameter Description Minms t0 t1 Setup time befor CHIP_EN goes from low to high Hold time after CHIP_EN goes high 0 3 Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 13 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 4 Electrical Characteristics 4.1 Absolute Maximum Ratings Stresses above those listed in Absolute Maximum Ratings may result in permanent damage to the device. These are stress ratings only and functional operation of the device is not implied. Table 4 Absolute Maximum Ratings Symbol VDDA3P3, VDDA, VDD3P3_RTC, VDD3P3_CPU TSTORE Parameter Power pin voltage Storage temperature Min

-0.3

-40 Max 3.6 150 Unit V 4.2 Recommended Operating Conditions Table 5 Recommended Operating Conditions Symbol VDDA3P3,VDDA,VDD3P 3_RTC,VDD3P3_CPU IVDD 2 TA Parameter Min Typ Max Unit Power pin voltage Current delivered by external power supply Operating ambient temperature 3.0 0.5

-40 3.3 3.6 V A

105 When writing eFuse, VDD3P3_CPU should not exceed 3.3v. When powered by a single power supply, the output current should reach 500mA and above. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 14 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 5 Application Notes 5.1 Module Dimensions Figure 4 Module Dimensions(Front view) Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 15 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 5.2 Reflow Profile Figure 5 Reflow Profile 5.3 Module Schematics Figure 6 Module Schematics Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 16 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 5.4 Peripheral Schematics This is the typical application circuit of the module connected with peripheral components (for example, reset button, JTAG interface, UART interface, etc). Figure 7 Peripheral Schematics Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 17 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 6 Product Trial Sales Mailboxsales@wireless-tag.com Technical Support Mailboxtechnical@wireless-tag.com Federal Communication Commission Statement (FCC, U.S.) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

- Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. IMPORTANT NOTES Co-location warning:

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. OEM integration instructions:

This device is intended only for OEM integrators under the following conditions:

Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 18 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module. As long as the conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). Validity of using the module certification:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End product labeling:

The final end product must be labeled in a visible area with the following: Contains Transmitter Module FCC ID:

2AFOS-WT018684-S5. Information that must be placed in the end user manual:

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Integration instructions for host product manufactures according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 2.3 Specific operational use conditions The module is a Bluetooth module with WiFi & BLE 2.4G function. 2412~2462MHz WiFi Specification Frequency:

Operation Number of Channel: 11 Modulation: DSSS Type: PCB Antenna Gain: 1 . 7 dBi Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 19 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 2402~2480MHz BLE Specification Frequency:

Operation Number of Channel: 40 Modulation:

GFSK Type: PCB Antenna Gain: 1 . 7 dBi The module can be used for mobile or applications with a maximum 1.7dBi antenna. The host manufacturer installing this module into their product must ensure that the final composit product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operaition. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product whic h integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Limited module procedures 2.4

. Not applicable 2.5 Trace antenna designs Not applicable. The module has its own antenna, and doesnt need a hosts printed board microstrip trace antenna etc. 2.6 RF exposure considerations The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization 2.7 Antennas Antenna Specification are as follows:

Type: PCB Antenna Gain: 1 . 7 dBi This device is intended only for host manufacturers under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna; The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a unique antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.

) Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 20 Wireless-Tag Technology Co., Ltd 2.8 Label and compliance information WT018684-S5 Datasheet V1.0.1 Host product manufacturers need to provide a physical or e-label stating Contains Transmitter Module FCC ID: 2AFOS-WT018684-S5 with their finished product. 2.9 Information on test modes and additional testing requirements BLE Operation Frequency:

2402~2480MHz Number of Channel: 40 Modulation: GFSK WIFI Operation Frequency:

2412~2462MHz Number of Channel: 11 Modulation: DSSS Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally. 2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Manufacturer's Name: WIRELESS-TAG TECHNOLOGY CO., LIMITED Sample Description: WIFI BLE Module Trade Mark: Wireless-tag Model number: WT018684-S5 This device was tested for operations. To comply with RF exposure requirements, a minimum separation distance of 20cm must be maintained between the users body and the charger, including the antenna. Accessories that do not meet these requirements may not comply with RF exposure requirements and should be avoided. Use only the supplied or an approved antenna. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 21 Wireless-Tag Technology Co., Ltd WT018684-S5 Datasheet V1.0.1 This device in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. All essential radio test suites have been carried out. This restriction will be applied to all Member States of European Union. 1. Declaration of Conformity Hereby, WIRELESS-TAG TECHNOLOGY CO., LIMITED declares that the product type WT018684-S5 is in compliance with Directives 2014/53/EU. The device complies with RF specifications when the device used at 20cm form your body Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 22

Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 WT018684-S6 Datasheet Version 1.0.0 April 27, 2022 Wireless-Tag Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 1 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 2.4GHz Wi-Fi(802.11b/g/n) + Bluetooth 5(LE) module Built around ESP8684 of SoCs, 32-bit RISC-V single-core processor Flash up to 4 MB, rich set of peripherals On-board PCB antenna and external antenna connector Ordering Code WT018684-S6-N1 WT018684-S6-N2 WT018684-S6-N4 Chip Embedded ESP8684 ESP8684 ESP8684 Flash(MB) 1 2 4 PSRAM(MB) 0 0 0 Antenna PCB PCB PCB Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 2 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 About the Document This document provides users with WT018684-S6 specification. Document Version Please go to the official website of wireless-tag to download the latest version of the document. Revision History Please go to the Revision History page to view the revisions. Disclaimer of Warranties and Copyright Notice The information in this article, including the URL address for reference, is subject to change without notice. The Documentation is provided "as is" without warranty, including any warranty of merchantability, fitness for a particular purpose, or non-infringement, and any warranties of any proposal, specification, or sample referred elsewhere. This document is not responsible for any infringement of any patent rights arising from the use of the information in this document. Nothing in this document grants, by estoppel or otherwise, any license to use the Intellectual Property Rights, whether express or implied. All trade names, trademarks and registered trademarks mentioned herein are the property of their respective owners and are hereby declared. Copyright 2022 wireless-tag. All rights reserved. Note The contents of this manual are subject to change due to product version upgrades or other reasons. Shenzhen Wireless-Tag Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Shenzhen Wireless-Tag Technology Co., Ltd. does its best to provide accurate information in this manual. However, Shenzhen Wireless-Tag Technology Co., is completely correct. All Ltd. does not ensure that the content of the manual statements in this manual , information and advice do not constitute any express or implied warranties. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 3 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 Revision History No. Version Changes Notes Editor Date 1 V1.0.0 C First release GUO April 27, 2022

*ChangesCcreateAaddMmodifyDdelete Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 4 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 Table of Contents 1 Module Overview .............................................................................................................................6 1.1 Features ................................................................................................................................ 6 1.2 Description ............................................................................................................................7 1.3 Applications .......................................................................................................................... 8 2 Block Diagram ................................................................................................................................ 10 3 Pin Definitions ................................................................................................................................11 3.1 Pin Layout ........................................................................................................................... 11 3.2 Pin Description ....................................................................................................................11 3.3 Strapping Pins ..................................................................................................................... 12 4 Electrical Characteristics ................................................................................................................ 14 4.1 Absolute Maximum Ratings ................................................................................................14 4.2 Recommended Operating Conditions ................................................................................14 5 Application Notes ...........................................................................................................................15 5.1 Module Dimensions ............................................................................................................15 5.2 Reflow Profile ......................................................................................................................16 5.3 Module Schematics ............................................................................................................ 16 5.4 Peripheral Schematics ........................................................................................................ 17 6 Product Trial ................................................................................................................................... 18 Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 5 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 1 Module Overview 1.1 Features MCU ESP8684 SoC embedded, 32-bit RISC-V single-core processor, up to 120 MHz 576 KB ROM 272 KB SRAM 16KB for cache SIP flash Flash controller with cache Supports flash in Circuit Programming (ICP) Wi-Fi IEEE 802.11 b/g/n compliant Supports 20MHz bandwidth in 2.4GHz band 1T1R mode with data rates up to 72.2Mbps Data rates up to 72.2 Mbps in 802.11n mode Frame aggregation (TX/RX A-MPDU, TX/RX A-MSDU) Immediate Block ACK Fragmentation and defragmentaion Transmit opportunity(TXOP) Automatic Beacon monitoringhardware TSF) Wireless multimediaWMM 3 virtual Wi-Fi interfaces Antenna diversity Supports external power amplifier Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode NBCE power:17.17dbm Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 6 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 Note that when ESP8684 scans in Station mode, the SoftAP channel will change along with the Station channel. Bluetooth Bluetooth low energyBluetooth LE:Bluetooth 5 High power mode Speed: 125kbps, 500kbps, 1Mbps, 2Mbps Advertising Extensions Multiple Advertisement Sets Channel Selection Algorithm #2 Internal co-existence mechanism between Wi-Fi and Bluetooth to share the same antenna NBCE power:5.68dbm Hardware Peripheral interfaces: 14xGPIO, 3xSPI, 2xUART, I2C master, LED PWM controller with up to 6 channels, General DMA controller (GDMA) with 1 receive channel and 1 transmit channel Analog interfaces: 112-bit SAR ADCs with up to 5 channels, 1x temperature sensor Timers: 1x54-bit general-purpose timer, 2x watchdog timers, 1x52-bit system timer 1.2 Description The WT018684-S6 module is based on ESP8684, which is a highly integrated and low-power system-on-chip (SoC) supporting Wi-Fi and Bluetooth, designed for Internet of Things (IoT), mobile devices, wearable electronics, smart homes, such as wake word detection, speech recognition, face recognition, smart control panels, smart speakers, etc. The ESP8684 chip features state- of -the -art power and RF Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 7 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 performance, complying with the Wi-Fi IEEE802.11b/g/n protocol and BLE 5.0. The chip integrates a 32-bit RISC-V single-core processor, up to 120 MHz. You can power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for changes or crossing of thresholds. It supports a secondary development without the need for additional microcontrollers or processors. The chip supports a variety of low-power working states, which can meet the power consumption requirements of various application scenarios. The unique features of the chip, such as fine-grained clock gating, dynamic voltage and frequency scaling, and RF output power adjustment, can achieve the best balance between communication distance, communication rate and power consumption. The WT018684-S6 module integrate a rich set of peripherals, ranging from UARTSPII2S I2CADCtemperature sensor, GPIO, LED PWM controller, GDMA, general-purpose timer, watchdog timer. The WT018684-S6 module have a variety of unique hardware security features ensured by the cryptographic hardware accelerators that support AES, SHA and RSA algorithms. RNG, HMAC and digital signature modules provide more security performance. Other security features include flash encryption, secure boot, signature verification. Reliable security features make the SoC perfect for a variety of encryption products. The WT8684-S6 module supports Bluetooth Low Energy:

Bluetooth5, Bluetooth mesh. Bluetooth speed supports: 125kbps, 500kbps, 1Mbps, 2Mbps. It aslo supports advertising extensions, multiple advertisement, channel selection. WT018684-S6 is generic Wi-Fi+Bluetooth LE MCU-based module, integrated with ESP8684 of SoCs. 1.3 Applications Generic Low-power IoT Sensor Cameras for Video Streaming Hubs Over-the-top (OTT) devices Generic Low-power IoT Data Speech recognition Loggers Image recognition Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 8 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 Mesh network Home automation Health/Medical/Nursing Wi-Fi enabled toys Smart home control panel Wearable electronics Smart building Retail & Catering Applications Industrial automation Smart POS machines Smart agriculture Audio device Smart door lock Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 9 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 2 Block Diagram Figure 1 Block Diagram Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 10 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 3 Pin Definitions 3.1 Pin Layout Figure 2 Pin Layout 3.2 Pin Description Table 1 Pin Definition and Description Index Name Type 1 2 3 4 5 6 7 IO0 IO1 EN IO2 IO4 IO5 IO6 I/O/T I/O/T I I/O/T I/O/T I/O/T I/O/T Power Domain VDD3P3_RTC VDD3P3_RTC VDD3P3_RTC VDD3P3_RTC VDDP3_CPU VDDP3_CPU VDDP3_CPU Function the GPIO0,ADC1_CHO GPIO0,ADC1_CH1 High: on, enables chip. Low: off, the chip powers off. Note: Do not leave the CHIP_EN pin floating. GPIO2,ADC1_CH2FSPIQ GPIO4 ADC1_CH4,FSPIHD,MTMS GPIO5,FSPIWP,MTDI GPIO6,FSPICLK,MTCK Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 11 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 3V3 GND IO7 IO8 IO9 IO10 IO3 RXDO TXDO PA G I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T I/O/T

VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU VDDP3_CPU Analog power supply Ground,FSPID,MTDP GPIO7 GPIO8 GPIO9 GPIO10,FSPICSO GPIO3,ADC1_CH3 GPIO19,U0RXD GPIO20,U0TXD 8 9 10 11 12 13 14 15 16 PA: Analog power supply PD: Digital IO power supply I: Input O: Output T: High impedance The pin function in this table refers only to some fixed settings and do not cover all cases for signals that can be input and output through the GPIO matrix. 3.3 Strapping Pins ESP8684 has two strapping pins:

GPIO8 GPIO9 Software can read the values of GPIO8 and GPIO9 from GPIO_STRAPPING field in GPIO_STRAP_REG register. During the chips system reset, the latches of the strapping pins sample the voltage level as strapping bits of 0 or 1, and hold these bits until the chip is powered down or shut down. There are several types of system resets:

Power-on reset RTC watchdog reset Brownout reset analog super watchdog reset By default, GPIO9 is connected to the internal weak pull-up resistor. If GPIO9 is not connected or connected to an external high-impedance circuit, the latched bit value will be 1. To change the strapping bit values, you can apply the external pull-down/pull-up resistances, or use the host MCUs GPIOs to control the voltage level of these pins when powering on ESP8684 series. After reset, the strapping pins work as normal-function pins. See Table 2 for detailed booting configurations of the strapping pins Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 12 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 Table 2 Strapping Pins Booting Mode Pin GPIO8 GPIO9 Default N/A Internal weak pull-up SPI Boot Download Boot Dont care 1 1 0 Enabling/Disabling ROM Messages Print During Booting Pin Default Function GPIO8 N/A When the value of eFuse field EFUSE_UART_PRINT_CONTROL is 0 (default), print is enabled and not controlled by GPIO8. 1, if GPIO8 is 0, print is enabled; if GPIO8 is 1, it is disabled. 2, if GPIO8 is 0, print is disabled; if GPIO8 is 1, it is enabled. 3, print is disabled and not controlled by GPIO8. The strapping combination of GPIO8=0 and GPIO9=0 is invalid. Figure 3 shows the setup and holding times of the strapping pins before and after the CHIP_EN signal goes high. Details about the parameters are listed in Table 3. t0 t1 VIL_nRST CHIP_EN VIH Strapping pin Table 3 Parameter Descriptions of Setup and Hold Times for the Strapping Pins Parameter Description Minms t0 t1 Setup time befor CHIP_EN goes from low to high Hold time after CHIP_EN goes high 0 3 Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 13 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 4 Electrical Characteristics 4.1 Absolute Maximum Ratings Stresses above those listed in Absolute Maximum Ratings may result in permanent damage to the device. These are stress ratings only and functional operation of the device is not implied. Table 4 Absolute Maximum Ratings Symbol VDDA3P3, VDDA, VDD3P3_RTC, VDD3P3_CPU TSTORE Parameter Power pin voltage Storage temperature Min

-0.3

-40 Max 3.6 150 Unit V 4.2 Recommended Operating Conditions Table 5 Recommended Operating Conditions Symbol VDDA3P3,VDDA,VDD3P 3_RTC,VDD3P3_CPU IVDD 2 TA Parameter Min Typ Max Unit Power pin voltage Current delivered by external power supply Operating ambient temperature 3.0 0.5

-40 3.3 3.6 V A

105 When writing eFuse, VDD3P3_CPU should not exceed 3.3v. When powered by a single power supply, the output current should reach 500mA and above. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 14 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 5 Application Notes 5.1 Module Dimensions Figure 4 Module Dimensions Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 15 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 5.2 Reflow Profile Figure 5 Reflow Profile 5.3 Module Schematics Figure 6 Module Schematics Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 16 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 5.4 Peripheral Schematics This is the typical application circuit of the module connected with peripheral components (for example, reset button, JTAG interface, UART interface, etc). Figure 7 Peripheral Schematics Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 17 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 6 Product Trial Sales Mailboxsales@wireless-tag.com Technical Support Mailboxtechnical@wireless-tag.com Federal Communication Commission Statement (FCC, U.S.) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

- Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. IMPORTANT NOTES Co-location warning:

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. OEM integration instructions:

This device is intended only for OEM integrators under the following conditions:

The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 18 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 used with the external antenna(s) that has been originally tested and certified with this module. As long as the conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). Validity of using the module certification:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End product labeling:

The final end product must be labeled in a visible area with the following: Contains Transmitter Module FCC ID:

2AFOS-WT018684-S5. Information that must be placed in the end user manual:

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Integration instructions for host product manufactures according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 2.3 Specific operational use conditions The module is a Bluetooth module with WiFi & BLE 2.4G function. 2412~2462MHz WiFi Specification Frequency:

Operation Number of Channel: 11 Modulation: DSSS Type: PCB Antenna Gain: 1 . 7 dBi Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 19 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 2402~2480MHz BLE Specification Frequency:

Operation Number of Channel: 40 Modulation:

GFSK Type: PCB Antenna Gain: 1 . 7 dBi The module can be used for mobile or applications with a maximum 1.7dBi antenna The host manufacturer installing this module into their product must ensure that the final composit product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operaition. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show i n this manual. 2.4 Not applicable. Limited module procedures 2.5 Trace antenna designs Not applicable. The module has its own antenna, and doesnt need a hosts printed board microstrip trace antenna etc. 2.6 RF exposure considerations The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization 2.7 Antennas Antenna Specification are as follows:

Type: PCB Antenna Gain: 1 . 7 dBi This device is intended only for host manufacturers under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna; The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a unique antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.) 8 2. Label and compliance information Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 20 Wireless-Tag Technology Co., Ltd to manufacturers product need Host provide a physical or e-label WT018684-S6 Datasheet V1.0.0 Transmitter stating Contains Module FCC ID:

2AFOS-WT018684-S5 with their finished product. 2.9 Information on test modes and additional testing requirements BLE Operation Frequency:

2402~2480MHz Number of Channel: 40 Modulation: GFSK WIFI Operation Frequency:

2412~2462MHz Number of Channel: 11 Modulation: DSSS Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally. 2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Manufacturer's Name: WIRELESS-TAG TECHNOLOGY CO., LIMITED Sample Description: WIFI BLE Module Trade Mark: Wireless-tag Model number: WT018684-S6 This device was tested for operations. To comply with RF exposure requirements, a minimum separation distance of 20cm must be maintained between the users body and the charger, including the antenna. Accessories that do not meet these requirements may not comply with RF exposure requirements and should be avoided. Use only the supplied or an approved antenna. This device in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 21 Wireless-Tag Technology Co., Ltd WT018684-S6 Datasheet V1.0.0 The device complies with RF specifications when the device used at 20cm form your body All essential radio test suites have been carried out. This restriction will be applied to all Member States of European Union. 1. Declaration of Conformity Hereby, WIRELESS-TAG TECHNOLOGY CO., LIMITED declares that the product type WT018684-S6 is in compliance with Directives 2014/53/EU. Copyright 2022, Wireless-Tag Technology Co., Ltd http://www.wireless-tag.com 22

12*15mm WIFI BLE Module Module: WT018684-S5 Input:3.3V 0.5A FCC ID:2AFOS-WT018684-S5 Importer: xxxxxxxx Address: xxxxxxxxx Wireless-Tag Technology Co., Ltd

C5266091_X10_Ed.1 WIRELESS-TAG TECHNOLOGY CO., LIMITED. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality FCC ID: 2AFOS-WT018684-S5 To Whom It May Concern, Date: 12/1/2022 Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No Short-Term Confidentiality No No No No No No No No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Louie Wang Date: 12/1/2022 Title: Manager 1/1

WIRELESS-TAG TECHNOLOGY CO., LIMITED. Model difference statement Product Name: WIFI BLE Module Model No.: WT018684-S5, WT018684-S5U, WT018684-S6, WT018684-S6U A, state Valley, hereby Shenzhen.) TECHNOLOGY CO., Dashi 1st that 801, Block Xili Community, LIMITED., Road, WT018684-S6, We (WIRELESS-TAG International Innovation District, function and module(the layout of RF part and antenna is identical), partial WT018684-S5, name. WT018684-S6, name. 6, Street, are except from WT018684-S5. except and are different same circuit Building Xili WT018684-S6U WT018684-S5U WT018684-S6U name the same circuit package module, module, layout, except model and and are are the Shenzhen Nanshan the same the the model the model Signature:

Name: Louie Wang Title: Manager Tel: 0755-22677752 Email: engineera@wireless-tag.com Date: 1.16.2023

C5266091_X8_Ed.1 Letter of Authorization Company: WIRELESS-TAG TECHNOLOGY CO., LIMITED. Address: 801, Block A, Building 6, Shenzhen International Innovation Valley, Dashi 1st Road, Xili Community, Xili Street, Nanshan District, Shenzhen. Product Name: WIFI BLE Module Model Number: WT018684-S5, WT018684-S5U, WT018684-S6, WT018684-S6U FCC Identifier: 2AFOS-WT018684-S5 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Louie Wang Date: 12/1/2022 Title: Manager Signature of applicant:

1/1

C5266091_X9_Ed.2 WIRELESS-TAG TECHNOLOGY CO., LIMITED Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Company name: WIRELESS-TAG TECHNOLOGY CO., LIMITED FCC ID: 2AFOS-WT018684-S5 Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Certification Guide V02. FCC ID: 2AFOS-WT018684-S5 has been examined against the following requirements. Items to be covered by Single modular transmitters. Requirement per 15.212 and KDB 996369 D01 Modular Certification Guide v02 1. The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly 2. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal 3. The module must contain power supply regulation on the module 4. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) 5. The module must demonstrate compliance in a stand-

alone configuration 6. The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) 7. The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee 8. The module must comply with RF exposure requirements Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Yes, The module has its own RF shield Yes, The module has data transmission function and supports 2.4Gwifi& BLE function. Module with power regulation and support for DC 3.3V input The module meets the antenna requirements. The module has been tested in a standalone configuration, see report for details The module has its own FCC ID number. See the label for details. The module meets any specific rules or operational requirements applicable to the transmitter Answer: The module complies with any applicable RF exposure requirements, as detailed in the instructions. Name: Louie Wang Date: 2022-12-01 Title: Manager Signature of applicant 1/1