FCC ID: 2ALGY-22066 nRF52840 module

Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Version: 1 Issued Date: 2023/06/26 Datasheet

(Product): nRF52840 module

(Model No.): Holyiot-22066-NRF52840 1 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 1. Overview ............................................................................................................................. 3 1.1. Application .............................................................................................................. 3 1.2. Specifications ......................................................................................................... 4 2. Introduction ......................................................................................................................... 5 2.1 Programmer ................................................................................................................ 5 2.2 Software development Tool ......................................................................................... 5 2.3 Protocols ..................................................................................................................... 5 2.4 SoftDevices ................................................................................................................. 6 3. Product Descriptions ......................................................................................................... 6 3.1 Mechanical drawings ................................................................................................... 6 3.2 Pin assignments .......................................................................................................... 7 4. Mounting our board on the host PCBA .......................................................................... 10 5. Miscellaneous ................................................................................................................... 11 6. Absolute maximum ratings.............................................................................................. 12 7. List of Holyiot module ...................................................................................................... 13 8.FCC WARNING ................................................................................................................... 15 2.2 List of applicable FCC rules ..................................................................................... 18 RF exposure considerations ................................................................................. 20 2.6 2.8 Label and compliance information ........................................................................ 22 2.10 Additional testing, Part 15 Subpart B disclaimer ................................................... 22 2 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 1. Overview Holyiot-22066 is powerful, highly flexible ultra-low power Bluetooth low energy

(BLE) module using Nordic NRF52840 SoC, with ARM Cortex-M4 CPU, which has floating Point unit (FPU), 1MB flash with cache and 256kB RAM. It offers a wealth of peripherals that include NFC, USB and multiple interface options including Quad SPI (QSPI). It has high-end security features included to achieve best in clas security with an ARM CryptoCEll cryptographic system on chip and a full AES 128-bit encryption Holyiot-22066 nRF52840 QIAACO 23mm(L)*13.90mm(W)*2.4mm(H) PCB Antenna 500 meters for bluetooth 5.0 2ALGY-22066 suite, it supports BLE mesh Bluetooth 5.0 long range Processing power and flash flexibility Multiprotocol radio Power Efficiency Model Chip Size BLE Antenna BT Range FCC ID 1.1. Application Internet of Things (IoT) SmartHome sensors Computer peripherals A4WP Rezence wireless charging Sports and fitness sensors and hubs Smart watches Interactive games Wearables Connected white goods Voice-command smart remotes Beacons 3 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Connected health products RC Toys Building automation and sensor networks 1.2. Specifications Bluetooth 5 ready multi-protocol radio

- 2Mbps

- Long range

- Advertising extensions

- Improved coexistence (CSA #2) IEEE 802.15.4 radio support

- Thread

- Zigbee 32-bit ARM Cortex-M4F @ 64MHz Up to 111 dB link budget for Bluetooth long range mode Full-speed 12Mbs USB controller NFC Tag-A Software stacks available as downloads Programmable output power from +8dBm to -20dBm On-air compatible with nRF51, nRF24L and nRF24AP Series High-precision RSSI 128 bit AES/ECB/CCM/AAR co-processor Single-ended antenna output (on-chip balun) Software stacks available as downloads Application development independent of protocol stack Wide supply voltage range + 1.7V to 5.5V QSPI/SPI/2-wire/IS/PDM/QDEC Programmable Peripheral Interface - PPI High speed SPI interface 32MHz Quad SPI interface 32MHz EasyDMA for all digital interfaces RAM mapped FIFO using EasyDMA 12bit/200K SPS ADC On-chip DC-DC buck converter Quadrature demodulator Arm CryptoCell CC310 crytographic security module QSPI/SPI/2-wire/IS/PDM/QDEC

-96dBm Sensitivity for Bluetooth low energy 4 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 2. Introduction Holyiot-22066 is powerful, highly flexible ultra-low power Bluetooth low energy

(BLE) module using Nordic NRF52840 SoC, with ARM Cortex-M4 CPU, which has floating Point unit (FPU), 1MB flash with cache and 256kB RAM. It offers a wealth of peripherals that include NFC, USB and multiple interface options including Quad SPI (QSPI). It has high-end security features included to achieve best in clas security with an ARM CryptoCEll cryptographic system on chip and a full AES 128-bit encryption suite 2.1 Programmer Holyiot-22066 module use the Serial Wire Debug(SWD port ), the module which layout the SWDIO, SWCLK, VDD, GND for debug and flash your own firmware, more info about the SWD, please visit https://www.silabs.com/community/mcu/32-

bit/knowledge-base.entry.html/2014/10/21/serial_wire_debugs-qKCT You can using the Jlink or Jtag for programmer. 2.2 Software development Tool It supports the standard Nordic Software Development Tool-chain using Segger Embedded Studio, Keil, IAR and GCC. More info please visit http://infocenter.nordicsemi.com/index.jsp?topic=/com.nordic.infocenter.nrf52/dita/

nrf52/development/nrf52_dev_kit.html&cp=1_1 2.3 Protocols This module support Bluetooth 5, Bluetooth Low Energy,Bluetooth mesh,Thread,802.15.4,ANT, 2.4GHz proprietary. So we can use different protocols for different situations. 5 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Software Development Kit Nordic Semiconductor's Software Development Kits (SDK) are your starting point for software development on the nRF51 and nRF52 Series. It contains source code libraries and example applications covering wireless functions, libraries for all peripherals, bootloaders, wired and OTA FW upgrades, RTOS examples, serialization libraries. More info please visit http://www.nordicsemi.com/eng/Products/nRF52840-DK You can also download the SDK for coding development . 2.4 SoftDevices Nordic Semiconductor protocol stacks are known as SoftDevices. SoftDevices are pre-compiled, pre-linked binary files. SoftDevices can be programmed in nRF5 series devices, and are freely downloadable from the Nordic website. Please download that here:

http://www.nordicsemi.com/eng/nordic/download_resource/60625/19/19221576/1 16072 Over-The-Air DFU The SoC is supported by an Over-The-Air Device Firmware Upgrade (OTA DFU) feature. This allows for in the field updates of application software and SoftDevice. 3. Product Descriptions 3.1 Mechanical drawings 6 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 3.2 Pin assignments 7 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com PIN No. 1 2 3 4 5 6 PIN define GND SWDCLK Functions Ground SWD clock input for debug and programming SWDIO SWD I/O for debug and programming P0.03 AIN1 P0.28 AIN4 P1.08 8 / 24 General purpose I/O Analog input General purpose I/O Analog input General purpose I/O 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com P0.07 P0.05 AIN3 VDD P0.26 P0.04 AIN2 P0.06 P0.08 P1.09 P0.12 P0.25 P0.23 P0.21 P0.19 P0.18 General purpose I/O General purpose I/O Analog input Power supply General purpose I/O General purpose I/O Analog input General purpose I/O t General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O nRESET VBUS Configurable as pin RESET 5 V input for USB 3.3 V regulator D-

D+

P0.14 P0.16 P0.13 P0.15 P0.17 P0.20 P0.22 P0.24 P1.00 P1.06 P0.09 NFC1 P0.10 NFC2 GND P1.11 9 / 24 USB D-

USB D+

General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O NFC antenna connection General purpose I/O NFC antenna connection Ground General purpose I/O Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com P1.10 P1.12 P1.13 P1.15 P1.14 P0.31 AIN7 P0.29 AIN5 P0.02 AIN0 P0.30 AIN6 P1.04 P1.02 P1.07 P1.05 P1.01 P1.03 P0.11 P0.27 VDDH DCCH General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O Analog input General purpose I/O Analog input General purpose I/O Analog input General purpose I/O Analog input General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O General purpose I/O High voltage power supply DC/DC converter output 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 4. Mounting our board on the host PCBA We suggest that you mount our RF board(Holyiot-18010-nRF52840) on the board like that:

1. 2. For the best Bluetooth performance, the antenna of the area need to extend about several mm without ground under the antenna of the edge of the host PCB. 3. The second choice is that place our board at the corner of host PCB, the antenna of board need to extend several mm outside of the Ground plane of the host PCB. 10 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 5. Miscellaneous Soldering Temperature-Time Profile for Re-Flow Soldering. Maximum number of cycles for re-flow is 2. No opposite side re-flow is allowed due to module weight. 11 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 6. Absolute maximum ratings 1. Maximum ratings Maximum ratings are the extreme limits to which the chip can be exposed for a limited amount of time without permanently damaging it. Exposure to absolute maximum ratings for prolonged periods of time may affect the reliability of the device. 2. Absolute maximum ratings 12 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 7. List of Holyiot module Part No. 1 Holyiot No. Nordic chip nRF51822 Holyiot-17085-PA PA Antenna Picture IPX antenna 2 nRF51822 YJ-15011-nRF51822 PCB antenna 3 nRF51822 YJ-14015-nRF51822 PCB antenna 13 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 4 nRF52832 YJ-16048-nRF52832 PCB antenna 5 nRF52832 YJ-17029-nRF52832 Ceramic antenna 6 nRF52832 YJ-16002-nRF52832 PCB antenna 7 nRF52832 YJ-17024-nRF52832 IPX antenna 8 nRF52832 YJ-17095-nRF52832 Ceramic antenna 9 nRF52832 YJ-17017-USB Ceramic antenna 10 nRF52832 YJ-17076-USB PCB antenna 11 nRF52840 YJ-17120-USB PCB antenna 14 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 12 nRF52840 YJ-18010-nRF52840 Ceramic antenna 13 nRF52840 YJ-18039-nRF52840 IPX antenna &

PCB antenna 8.FCC WARNING 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. 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. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user.

(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:

Note: 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 or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. 15 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 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 equipment complies with FCC radiation exposure limits set forth for an uncon-

trolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other 16 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com antenna or transmitter. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end user. The final end product must be labelled in a visible area with the following:

Contains Transmitter Module FCC ID:2ALGY-22066 17 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Requirement per KDB996369 D03 2.2 List of applicable FCC rules List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies. DO NOT list compliance to unintentional-radiator rules (Part 15 Subpart B) since that is not a condition of a module grant that is extended to a host manufacturer. See alsoSection 2.10 below concerning the need to notify host manufacturers that further testing is required.3 Explanation: This module meets the requirements of FCC part 15C (15.247).it Specifically identified AC Power Line Conducted Emission, Radiated Spurious emissions, Band edge and RF Conducted Spurious Emissions, Conducted Peak Output Power, Bandwidth, Power Spectral Density, Antenna Requirement. 2.3 Summarize the specific operational use conditions Describe use conditions that are applicable to the modular transmitter, including for example any limits on antennas, etc. For example, if point-to-

point antennas are used that require reduction in power or compensation for cable loss, then this information must be in the instructions. If the use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturers instruction manual. In addition, certain information may also be needed, such as peak gain per frequency band and minimum gain, specifically for master devices in 5 GHz DFS bands. Explanation: The product antenna uses an irreplaceable antenna with a gain of 4.51dBi 2.4 Single Modular If a modular transmitter is approved as a Single Modular , then the module manufacturer isresponsible for approving the host environment that the Single Modular is used with. The manufacturer of a Single Modular must describe, both in the filing and in the installation instructions, the alternative means that the Single Modular manufacturer uses to verify that the host meets the necessary requirements to satisfy the module limiting conditions. A Single Modular manufacturer has the flexibility to define its alternative method to address the conditions that limit the initial approval, such as:

shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation. The alternative method could include that the limited 18 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com module manufacturer reviews detailed test data or host designs prior to giving the host manufacturer approval. This Single Modular procedure is also applicable for RF exposure evaluation when it is necessary to demonstrate compliance in a specific host. The module manufacturer must state how control of the product into which the modular transmitter will be installed will be maintained such that full compliance of the product is always ensured. For additional hosts other than the specific host originally granted with a limited module, a Class II permissive change is required on the module grant to register the additional host as a specific host also approved with the module. Explanation: The module is a single module. 2.5 Trace antenna designs For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369 D02 FAQ Modules for Micro-Strip Antennas and traces. The integration information shall include for the TCB review the integration instructions for the following aspects: layout of trace design, parts list

(BOM), antenna, connectors, and isolation requirements. a) Information that includes permitted variances (e.g., trace boundary limits, thickness, length, width, shape(s), dielectric constant, and impedance as applicable for each type of antenna); b) Each design shall be considered a different type (e.g., antenna length in multiple(s) of frequency, the wavelength, and antenna shape (traces in phase) can affect antenna gain and must be considered); c) The parameters shall be provided in a manner permitting host manufacturers to design the printed circuit

(PC) board layout; d) Appropriate parts by manufacturer and specifications; e) Test procedures for design verification; and f) 19 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Production test procedures for ensuring compliance The module grantee shall provide a notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify the module grantee that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the grantee, or the host manufacturer can take responsibility through the change in FCC ID

(new application) procedure followed by a Class II permissive change application 2.6 RF exposure considerations It is essential for module grantees to clearly and explicitly state the RF exposure conditions that permit a host product manufacturer to use the module. Two types of instructions are required for RF exposure information: (1) to the host product manufacturer, to define the application conditions

(mobile, portable xx cm from a persons body); and (2) additional text needed for the host product manufacturer to provide to end users in their end-product manuals. If RF exposure statements and use conditions are not provided, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID (new application). 20 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com Explanation: The module complies with FCC radiofrequency radiation exposure limits for uncontrolled environments. The device is installed and operated with a distance of more than 20 cm between the radiator and your body." This module follows FCC statement design, FCC ID : 2ALGY-22066 2.7 Antennas A list of antennas included in the application for certification must be provided in the instructions. For modular transmitters approved as limited modules, all applicable professional installer instructions must be included as part of the information to the host product manufacturer. The antenna list shall also identify the antenna types (monopole, PIFA, dipole, etc. (note that for example an omni-directional antenna is not considered to be a specific antenna type). For situations where the host product manufacturer is responsible for an external connector, for example with an RF pin and antenna trace design, the integration instructions shall inform the installer that unique antenna connector must be used on the Part 15 authorized transmitters used in the host product. 21 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com The module manufacturers shall provide a list of acceptable unique connectors. Explanation: The product antenna uses an irreplaceable antenna with a gain of 4.51dBi 2.8 Label and compliance information Grantees are responsible for the continued compliance of their modules to the FCC rules. This includes advising host product manufacturers that they need to provide a physical or e-label stating Contains FCC ID with their finished product. See Guidelines for Labeling and User Information for RF Devices KDB Publication 784748. Explanation: The host system using this module, should have label in a visible area indicated the following texts: "Contains FCC ID: 2ALGY-

22066 2.9 Information on test modes and additional testing requirements5 Additional guidance for testing host products is given in KDB Publication 996369 D04 Module Integration Guide. Test modes should take into consideration different operational conditions for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. The grantee should provide information on how to configure test modes for host product evaluation for different operational conditions for a stand-alone modular transmitter in a host, versus with multiple, simultaneously transmitting modules or other transmitters in a host. Grantees can increase the utility of their modular transmitters by providing special means, modes, or instructions that simulates or characterizes a connection by enabling a transmitter. This can greatly simplify a host manufacturers determination that a module as installed in a host complies with FCC requirements. Explanation: Shenzhen holyiot technology Co.,LTD. can increase the that utility of our modular transmitters by providing instructions simulates or characterizes a connection by enabling a transmitter. 2.10 Additional testing, Part 15 Subpart B disclaimer The grantee should include a statement that the modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the 22 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com modular transmitter grant of certification. If the grantee markets their product 23 / 24 Shenzhen Holyiot Technology Co.,Ltd www.holyiot.com info@holyiot.com 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. Explanation: The module without unintentional-radiator digital circuity, so the module does not require an evaluation by FCC Part 15 Subpart B. The host shoule be evaluated by the FCC Subpart B. 24 / 24

Shenzhen holyiot technology Co.,LTD

(July 13, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature:

Name: spring mao Title: Sales

(Shenzhen holyiot technology Co.,LTD)

(Jul. 13, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID:2ALGY-22066)

[Shenzhen holyiot technology Co.,LTD] (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely,

(Applicant signature)

(Applicant printed name) spring mao

(Shenzhen holyiot technology Co.,LTD)

(Jul. 13, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID:2ALGY-22066)

[Shenzhen holyiot technology Co.,LTD] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) spring mao

Shenzhen holyiot technology Co.,LTD

(July 13, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (nRF52840 module / Holyiot-22066-

NRF52840 / FCC ID: 2ALGY-22066 ) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the 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 No No NOTE 1 NOTE 1 No No Short-Term Confidentiality NOTE 2 No No No No No No required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Signature:

Name: spring mao Title: Sales

< Shenzhen holyiot technology Co.,LTD >

Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 Company name: Shenzhen holyiot technology Co.,LTD FCC ID: 2ALGY-22066 Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Certification Guide v02. FCC ID: 2ALGY-22066 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 Explanation from Grantee 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 YES YES YES 4. The module must contain a permanently attached YES 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 YES YES YES YES Name: spring mao Date: 2023.07.13 Title: Sales Signature of applicant

Attestation Statements

(uly 13, 2023) TO: Federal Communications Commi:

Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2ALGY-22066 )

(Shenzhen holyiot technology Co.,LTD), the undersigned, hereby authorize (SOUTH BAY INNOVATION LLC) to act as our designated U.S. agent for service of process, (Shenzhen holyiot technology Co.,LTD) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment.

{SOUTH BAY INNOVATION LLC) accepts the responsibility to act as designated U.S. agent for service of process, provides an agent for no less than one year after the Applicant Information:

Company name: Shenzhen holyiot technology Co.,LTD Contact Name: spring mao Address:

Rm.308, 310, Bldg 9. Wangtang industrial Park xinwei hen China 518055 Telephone No: 13538214502 Email: spring@holyiot.com xili Town. Nanshan Dist.Shenz U.S. Agent Information:

Company Name: SOUTH BAY INNOVATION LLC. Address: 23545 CRENSHAW BLVD STE 106 Torrance, CA90505 Contact Name: Yueting Zhu Telephone No: 4243769142 Email: southbayinnovation@ southbayinnovation.com FRN: 0033401811 Agent Signature: uot Applicant printed name: spring mao Agent printed name: Yueting Zhu