2ASEO-HM-BT2204Bluetooth Low Energy Data Transmission Module

HM-BT2204 V1.0 1/ 15 www.hoperf.com HM-BT2204 Bluetooth Low Energy (BLE) Data Transmission Module HM-BT2204 V1.0 2/ 15 www.hoperf.com 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 HM-BT2204 V1.0 3/ 15 www.hoperf.com 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 flexible peripherals;  Can be used as a BLE data transmission module or as an MCU alone;  Support a universal serial interface UART communication;  Support AT command to reset module, get MAC address; HM-BT2204 V1.0 4/ 15 www.hoperf.com  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 cycle;  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 adjustment);  Support anti-hijacking password setting, modification and recovery to prevent malicious third-party connection; HM-BT2204 V1.0 5/ 15 www.hoperf.com  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°C～+85°C  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 HM-BT2204 V1.0 6/ 15 www.hoperf.com 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 user’s 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. HM-BT2204 V1.0 7/ 15 www.hoperf.com 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) HM-BT2204 V1.0 8/ 15 www.hoperf.com 6.2 Module Pin Definition PinNo PinName Type Description 1 PB2 I/O General GPIO 2 PB1 I/O General GPIO 3 PB0 I/O General GPIO 4 PA0 I/O General GPIO 5 PA1 I/O SWCLK; Serial Clock for Debugging and Programming 6 PA2 I/O SWDIO; Serial Data for Debugging and Programming 7 PA3 I/O General GPIO 8 PA4 I/O General GPIO 9 TXD DO PA5;UARTTXD 10 RXD DI PA6;UARTRXD 11 GND DG Power Ground 12 GND DG Power Ground 13 PD1 I/O General GPIO ; 32.768KHz Crystal Pin 14 PD0 I/O General GPIO ; 32.768KHz…

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SHEN ZHEN HOPE MICROELECTRONICS CO., LTD Sept. 23, 2020 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA 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 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-BT2204，HM-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 FCC Modular Approval Request Rev 3.0 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 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) 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. Shielding is provided by a metal cover over the circuitry. 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. All modulation and data inputs are buffered by circuitry on the transmitter chip. The module must contain power supply regulation on the module. Power supply regulation is provided by circuitry on the transmitter chip. 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 antenna is fixed. The module must demonstrate compliance in a stand-alone configuration. Testing was performed in a stand-alone configuration as shown in the test setup photos. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). 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. SHEN ZHEN HOPE MICROELECTRONICS CO., LTD FCC Modular Approval Request Rev 3.0 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 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. The module must comply with RF exposure requirements 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 Ref Sect Requirements of KDB 996369 D03 User Manual Page Number reference 2.2 List of applicable FCC rules 2.3 Summarize the specific operational use conditions 2.4 Limited module procedures 2.5 Trace antenna designs 2.6 RF exposure considerations 2.7 Antennas 2.8 Label and compliance information 2.9 Information on test modes and additional testing requirements 2.10 Additional testing, Part 15 Subpart B disclaimer Name: Xiaolei Zou Date: Sept. 23, 2020 Title: Manager Signature of applicant

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 Commission’s 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 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR 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

External Photos TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

FCC ID Label Location FCC ID: 2ASEO-HM-BT2204

Internal Photos OPEN VIEW OF EUT INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 BT Antenna

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Bluetooth Low Energy Data Transmission Module Model Name HM-BT2204 FCC ID 2ASEO-HM-BT2204 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v05 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. Where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 3. CALCULATION BLE: P t = -1.022dBm=0.79mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(0.79mW /5mm) .[√2.440GHz)]= 0.25<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Report No.: AGC08509200801FE02 Page 34 of 67 Note: The peak emissions without marker on the above plots are fundamental wave and need not to compare with the limit. Report No.: AGC08509200801FE02 Page 35 of 67 TEST RESULT FOR BAND EDGE--1M GFSK MODULATION IN LOW CHANNEL GFSK MODULATION IN HIGH CHANNEL Report No.: AGC08509200801FE02 Page 36 of 67 TEST RESULT FOR BAND EDGE--2M GFSK MODULATION IN LOW CHANNEL GFSK MODULATION IN HIGH CHANNEL Report No.: AGC08509200801FE02 Page 37 of 67 10. MAXIMUM CONDUCTED OUTPUT POWER SPECTRAL DENSITY 10.1. MEASUREMENT PROCEDURE (1). Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator (2). Set the EUT Work on the top, the middle and the bottom operation frequency individually. (3). Set the SPA Trace 1 Max hold, then View. Note: The method of PKPSD in the KDB 558074 item 10.2 was used in this testing. 10.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) Refer to Section 7.2. 10.3. MEASUREMENT EQUIPMENT USED Refer to Section 6. 10.4. LIMITS AND MEASUREMENT RESULT 1M Channel No. PSD (dBm/3kHz) Limit (dBm/3kHz) Result Low Channel -16.510 8 Pass Middle Channel -16.377 8 Pass High Channel -16.429 8 Pass TEST PLOT OF SPECTRAL DENSITY FOR LOW CHANNEL Report No.: AGC08509200801FE02 Page 38 of 67 TEST PLOT OF SPECTRAL DENSITY FOR MIDDLE CHANNEL TEST PLOT OF SPECTRAL DENSITY FOR HIGH CHANNEL Report No.: AGC08509200801FE02 Page 39 of 67 2M Channel No. PSD (dBm/3kHz) Limit (dBm/3kHz) Result Low Channel -19.711 8 Pass Middle Channel -19.652 8 Pass High Channel -19.675 8 Pass TEST PLOT OF SPECTRAL DENSITY FOR LOW CHANNEL Report No.: AGC08509200801FE02 Page 40 of 67 TEST PLOT OF SPECTRAL DENSITY FOR MIDDLE CHANNEL TEST PLOT OF SPECTRAL DENSITY FOR HIGH CHANNEL Report No.: AGC08509200801FE02 Page 41 of 67 11. RADIATED EMISSION 11.1. MEASUREMENT PROCEDURE 1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away from the turntable. 2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine the position of the highest radiation. 3. The height of the broadband receiving antenna was varied between one meter and four meters above ground to find the maximum emissions field strength of both horizontal and vertical polarization. 4. For each suspected emission, the antenna tower was scan (from 1 M to 4 M) and then the turntable was rotated (from 0 degree to 360 degrees) to find the maximum reading. 5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth under Maximum Hold Mode. 6. For emissions above 1GHz, use 1MHz RBW and 3MHz VBW for peak reading. Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and pulsed operation is employed, the measurement field strength shall be determined by averaging over one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1 second interval during which the field strength is at its maximum values. 8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz. 9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that means the emissions level in peak mode also complies with the limit in average mode), then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in average mode again and reported. 10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the recorded data should be QP measured by receiver. High - Low scan is not required in this case. Report No.: AGC08509200801FE02 Page 42 of 67 11.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz Report No.: AGC08509200801FE02 Page 43 of 67 11.3. LIMITS AND MEASUREMENT RESULT 15.209 Limit in the below table has to be followed Frequencies (MHz) Field Strength (microvolts/meter) Measurement Distance (meters) 0.009~0.490 2400/F(kHz) 300 0.490~1.705 24000/F(kHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Note: All modes were tested for restricted band radiated emission, the test records reported below are the worst result compared to other modes. 11.4. TEST RESULT RADIATED EMISSION BELOW 30MHz The amplitude of spurious emissions from 9kHz to 30MHz which are attenuated more than 20 dB below the permissible value need not be reported. Report No.: AGC08509200801FE02 Page 44 of 67 RADIATED EMISSION BELOW 1GHZ EUT Bluetooth Low Energy Data Transmission Module Model Name HM-BT2204 Temperature 25°C Relative …

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Page 1 of 67 FCC Test Report Report No.: AGC08509200801FE02 FCC ID : 2ASEO-HM-BT2204 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth Low Energy Data Transmission Module BRAND NAME : HOPERF MODEL NAME : HM-BT2204 APPLICANT : SHEN ZHEN HOPE MICROELECTRONICS CO., LTD DATE OF ISSUE : Aug. 27, 2020 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC08509200801FE02 Page 2 of 67 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 27, 2020 Valid Initial Release Report No.: AGC08509200801FE02 Page 3 of 67 TABLE OF CONTENTS 1. VERIFICATION OF COMPLIANCE .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RELATED SUBMITTAL(S)/GRANT(S) ....................................................................................................... 7 2.4. TEST METHODOLOGY ............................................................................................................................. 7 2.5. SPECIAL ACCESSORIES .......................................................................................................................... 7 2.6. EQUIPMENT MODIFICATIONS ................................................................................................................. 7 2.7. ANTENNA REQUIREMENT ....................................................................................................................... 7 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 8 4. DESCRIPTION OF TEST MODES ................................................................................................................... 9 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF TESTED SYSTEM ............................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE .............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 6 DB BANDWIDTH ......................................................................................................................................... 18 8.1. MEASUREMENT PROCEDURE .............................................................................................................. 18 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 18 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 18 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 22 9.1. MEASUREMENT PROCEDURE .............................................................................................................. 22 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 22 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 22 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 22 10. MAXIMUM CONDUCTED OUTPUT POWER SPECTRAL DENSITY ........................................................ 37 Report No.: AGC08509200801FE02 Page 4 of 67 10.1. MEASUREMENT PROCEDURE ............................................................................................................ 37 10.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 37 10.3. MEASUREMENT EQUIPMENT USED .................................................................................................. 37 10.4. LIMITS AND MEASUREMENT RESULT................................................................................................ 37 11. RADIATED EMISSION ................................................................................................................................. 41 11.1. MEASUREMENT PROCEDURE ............................................................................................................ 41 11.2. TEST SETUP .......................................................................................................................................... 42 11.3. LIMITS AND MEASUREMENT RESULT...................................................…

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Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ CONDUCTED EMISSION TEST SETUP CONDUCTED TEST SETUP