Specifications

HM-BT4502 V1.0
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INTEGRATION INSTRUCTIONS
FCC rules
The HM-BT4502is a Bluetooth Low Energy (BLE) 5.0 Data Pass-through Module with frequency
hopping using an LoRa modulation. It operates on the 2402MHz-2480MHz band and, therefore, is
within U.S. FCC part 15.247 standard.
Modular installation instruction
The Bluetooth Low Energy (BLE) 5.0 Data Pass-through Module Integrates high-speed GPIO and
peripheral interface. Please pay attention to the installation direction (pin direction).
If the application requires the disconnection of VDD from the RFM97C, despite of the extremely low S
leep Mode current, the user should wait for 10 ms from of the end of the POR cycle before commencing
communications over the SPI bus. Pin 7 (NRESET) should be left floating during the POR sequence.
Trace antenna designs
Not Applicable
RF exposure considerations
To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and
operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.
Antennas
The Bluetooth Low Energy (BLE) 5.0 Data Pass-through Module beams signals and communicates
with its antenna, which is PCB Antenna.The Antenna gain is 1.5dBi
LABEL OF THE END PRODUCT
The final end product must be labeled in a visible area with the following
Host must contain Module FCC ID: 2ASEO-HM-BT4502
Host must contain Module IC ID:24999-BT4502
" Contains FCC ID: 2ASEO-HM-BT4502. If the size of the end product is larger than 8x10cm,
then the following FCC part 15.19 statement has to also be available on the label: This device
complies with Part 15 of 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.
Additional testing, Part 15 Subpart B disclaimer
The module without unintentional-radiator digital circuit, so the module does not required an evaluation by
FCC Part 15 Subpart B. The host should be evaluated by the FCC Subpart B.
Information on test modes and additional testing requirements
Data transfer module demo board can control the EUT work in RF test mode at specified test channel.