FCC ID: 2ASEO-HM-BT2204 Bluetooth Low Energy Data Transmission Module

HM-BT2204 V1.0 Bluetooth Low Energy (BLE) Data Transmission Module HM-BT2204 1/ 15 www.hoperf.com HM-BT2204 V1.0 Table of Contents 1 Product Overview ..................................................................................................................... 3 2 Module Features ....................................................................................................................... 3 3 Electrical Characteristics ......................................................................................................... 5 4 Module Function Description .............................................................................................. 6 5 Application Diagram ............................................................................................................... 7 6 Module Pin .................................................................................................................................. 7 6.1 Module Pinout ......................................................................................................................... 7 6.2 Module Pin Definition ............................................................................................................ 8 Module Size ...................................................................................................................................... 10 2/ 15 www.hoperf.com HM-BT2204 V1.0 1 Product Overview HM-BT2204 is a BLE data transmission module, based on a BLE 5.2 SoC chip (ARM Cortex-M33 32-bit processor, up to 76.8MHz working frequency), embedded with a 2.4GHz transceiver, equipped with an on-board PCB antenna. The module communicates with an external MCU to quickly set up wireless connection and data transmission between BLE slave devices and BLE master devices (such as mobile phones and tablets). The external MCU has a low resource occupation and the development process is very easy. 2 Module Features Based on ARM Cortex-M33 32-bit processor;

Support BLE 2.4GHz multi-protocol;

Supports BLE protocol stack from 4.x to 5.2;

Up to 512KB of FLASH and 32KB of RAM;

Support 14 general-purpose I/O ports, configurable mapping and Can be used as a BLE data transmission module or as an MCU flexible peripherals;

alone;

Support a universal serial interface UART communication;

Support AT command to reset module, get MAC address;

3/ 15 www.hoperf.com HM-BT2204 V1.0 Support AT commands to adjust the BLE connection interval and control different forwarding rates (dynamic power consumption adjustment);

Support AT commands to adjust the transmit power, modify the broadcast interval, customize the broadcast data, customize the device identification code, set the data delay (the preparation time for external MCU to receive data from serial port), modify the baud rate of serial port, modify the module name, and support data preservation when power is off;

The length of data packet from serial port is up to 240byte (the large packet will be automatically distributed);

Support APP to modify the module name and save the data when power is off, modify the baud rate of serial port and product identification code, customize the broadcast content and broadcast Support APP to reset the module and set the transmit power;

Support APP to adjust the BLE connection interval, but the data will not be saved after power is off (dynamic power consumption cycle;

adjustment);

Support anti-hijacking password setting, modification and recovery to prevent malicious third-party connection;

4/ 15 www.hoperf.com HM-BT2204 V1.0 The broadcast content can feedback the real-time status of the module, including battery power, and custom device identification code (suitable for broadcast applications);

Support internal RTC real-time clock;

3 Electrical Characteristics Working Voltage: 1.71V-3.8V Working Temperature: -20+85 Modulation Mode: GFSK Gaussian Frequency Shift Keying Modulation Frequency: 2402MHz-2483.5MHz Maximum Transmit Power: +6dBm Receive Current: 3.6mA @1Mbps GFSK Emission Current:4.1mA@0dBm Emission Current:8.2mA@6dBm Low Power Consumption Mode Current: 27uA/MHz in Active Mode @76.8MHz Deep Sleep Mode Current: 1.4uA @EM2 Deep Sleep Receiving Sensitivity: -98.9dBm @1Mbps GFSK 5/ 15 www.hoperf.com HM-BT2204 V1.0 4 Module Function Description After the module is started, it will automatically broadcast. The mobile device that has opened a specific APP will scan and connect with the module. After successful connection, the module can be operated through the BLE protocol. The external MCU can carry out wireless communication with the mobile device through the serial port of the module, and the external MCU can also send the control commands to change the communication parameters through the serial port of module. The users data format is defined by the upper application. The mobile device can send data to the module through the APP, and then the data will be send to the external MCU through the serial port of module. After the module receives the data packet from the external MCU, it will automatically forward it to the connected mobile device. The user needs to complete the code design of the external MCU and APP running on the mobile device. 6/ 15 www.hoperf.com HM-BT2204 V1.0 5 Application Diagram Figure 1 Schematic between HM-BT2204 and External MCU 6 Module Pin 6.1 Module Pinout Figure 2 Module Pinout (Top View) 7/ 15 www.hoperf.com HM-BT2204 V1.0 6.2 Module Pin Definition PinNo PinName Type Description 1 2 3 4 5 7 8 9 PB2 PB1 PB0 PA0 PA1 PA3 PA4 TXD 6 PA2 I/O General GPIO I/O General GPIO I/O General GPIO I/O General GPIO Programming Programming I/O General GPIO I/O General GPIO DO PA5;UARTTXD I/O SWCLK; Serial Clock for Debugging and I/O SWDIO; Serial Data for Debugging and 10 RXD DI PA6;UARTRXD 11 GND DG Power Ground 12 GND DG Power Ground 13 PD1 14 PD0 I/O General GPIO ; 32.768KHz Crystal Pin I/O General GPIO ; 32.768KHz Crystal Pin 15 VCC DV Power Supply 3.3V 16 GND DG Power Ground 8/ 15 www.hoperf.com HM-BT2204 V1.0 17 PC0 I/O General GPIO 18 PC1 I/O General GPIO 19 PC2 I/O General GPIO 20 PC3 I/O General GPIO 21 PC4 I/O General GPIO 22 PC5 I/O General GPIO 23 RES I/O Reset Pin; Active Low Table 1 Module Pin Definition 9/ 15 www.hoperf.com HM-BT2204 V1.0 Module Size Figure 3 HM-BT2204 Module Size (without Shielding Cover) 10/ 15 www.hoperf.com HM-BT2204 V1.0 Figure 4 HM-BT2204 Module Size (with Shielding Cover) 11/ 15 www.hoperf.com HM-BT2204 V1.0

(OEM) Integrator has to assure compliance of the entire end-product incl. the integrated RF Module. For 15 B (15.107 and if applicable 15.107) compliance, the host manufacturer is required to show compliance with 15 while the module is installed and operating. Furthermore the module should be transmitting and the evaluation should confirm that the module's intentional emissions (15C) are compliant

(fundamental / out-of-band). Finally the integrator has to apply the appropriate equipment authorization (e.g. Verification) for the new host device per definition in 15.101. Integrator is reminded to assure that these installation instructions will not be made available to the end-user of the final host device. The final host device, into which this RF Module is integrated" has to be labelled with an auxilliary lable stating the FCC ID of the RF Module, such as "Contains FCC ID:

"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 12/ 15 www.hoperf.com

(2) this device must accept any interference received, including HM-BT2204 V1.0 interference that may cause undesired operation."

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.

--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. 13/ 15 www.hoperf.com HM-BT2204 V1.0 Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Module statement The single-modular transmitter is a self-contained, physically delineated, component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements of 15.212(a)(1) as summarized below. 1) The radio elements have the radio frequency circuitry shielded. 2) The module has buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. 3) The module contains power supply regulation on the module. 4) The module contains a permanently attached antenna. 5) The module demonstrates compliance in a stand-alone configuration. 6) The module is labeled with its permanently affixed FCC ID label 7) The module complies with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. 8) The module complies with RF exposure requirements. 14/ 15 www.hoperf.com HM-BT2204 V1.0 This transmitter/module must not be collocated or operating in conjunction with any other antenna or transmitter. 15/ 15 www.hoperf.com FCC Statements

(OEM) Integrator has to assure compliance of the entire end-product incl. the integrated RF Module. For 15 B (15.107 and if applicable 15.109) compliance, the host manufacturer is required to show compliance with 15 while the module is installed and operating. Furthermore the module should be transmitting and the evaluation should confirm that the module's intentional emissions (15C) are compliant (fundamental / out-of-band). Finally the integrator has to apply the appropriate equipment authorization (e.g. Verification) for the new host device per definition in 15.101. Integrator is reminded to assure that these installation instructions will not be made available to the end-user of the final host device. The final host device, into which this RF Module is integrated" has to be labeled with an auxiliary label stating the FCC ID of the RF Module, such as "Contains FCC ID:

2ASEO-HM-BT2204

"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."

"Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the users authority to operate the equipment."

the Integrator will be responsible to satisfy SAR/ RF Exposure requirements, when the module integrated into the host device. Module statement The single-modular transmitter is a self-contained, physically delineated, component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements of 15.212(a)(1) as summarized below. 1) The radio elements have the radio frequency circuitry shielded. 2) The module has buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. 3) The module contains power supply regulation on the module. 4) The module contains a permanently attached antenna. 5) The module demonstrates compliance in a stand-alone configuration. 6) The module is labeled with its permanently affixed FCC ID label. 7) The module complies with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. 8) The module complies with RF exposure requirements. 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.

-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

SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Agent Authorization Company: SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Address: 2/F, 3 Building, Minqi Technology Park Pingshan Village,Xili Town, Nanshan District, Shenzhen, Guangdong, China Product Name: Bluetooth Low Energy Data Transmission Module Model Number(s): HM-BT2204HM-BT2201, HM-BT2202, HM-BT2206, HM-BT2208, HM-BT2210 Product Description: Bluetooth Low Energy Data Transmission Module We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-09-17 Name:

Xiaolei Zou Company: SHEN ZHEN HOPE MICROELECTRONICS CO., LTD

SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Sept. 23, 2020 Office of Engineering Technology Federal Communications Commission 7435 USA Columbia, MD 21046 Oakland Mills Road Subject: Explanation of differences between product types FCC ID : 2ASEO-HM-BT2204 Model Number: HM-BT2204, HM-BT2201, HM-BT2202, HM-BT2206, HM-

BT2208, HM-BT2210 To Whom It May Concern:

We, SHEN ZHEN HOPE MICROELECTRONICS CO., LTD hereby declare that the model : HM-BT2201, HM-BT2202, HM-BT2206, HM-BT2208, HM-

BT2210 is identical with the model : HM-BT2204, except the model name. Except for the different above, no other modification is performed. Sincerely, Signature:

SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Contact person: Xiaolei Zou

SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Sept. 23, 2020 Subject; Modular Transmitter Application Company name: SHEN ZHEN HOPE MICROELECTRONICS CO., LTD FCC ID: 2ASEO-HM-BT2204 Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID 2ASEO-HM-BT2204 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 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. 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. The module must contain power supply regulation on the module. 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 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Shielding is provided by a metal cover over the circuitry. All modulation and data inputs are buffered by circuitry on the transmitter chip. Power supply regulation is provided by circuitry on the transmitter chip. The antenna is fixed. Testing was performed in a stand-alone configuration as shown in the test setup photos. The modular was labeled with its own FCC ID. The outside of device in to which the module is installed will labeled Contains TX FCC ID:

2ASEO-HM-BT2204, Please refer to User Manual. FCC Modular Approval Request Rev 3.0 SHEN ZHEN HOPE MICROELECTRONICS CO., LTD The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. The module must comply with RF exposure requirements The modular is comply with all applicable FCC rules. Any modifications, not expressly approved by the manufacturer could void the authority to operate in these regions. This module operates under Part 15 .247 which is exempt from RF exposure evaluation owing to the very low operating power. Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements;

KDB User Manual Page Number reference Ref Sect List of applicable FCC rules Summarize the specific operational use conditions Limited module procedures Trace antenna designs RF exposure considerations Antennas Label and compliance information Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer Requirements of KDB 996369 D03 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 Name: Xiaolei Zou Date: Sept. 23, 2020 Title: Manager Signature of applicant FCC Modular Approval Request Rev 3.0

SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-09-17 Subject; Request for Confidentiality FCC ID: 2ASEO-HM-BT2204 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Contact person: Xiaolei Zou