Specifications

HM-BT4502 V1.0
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1 Product Overview
HM-BT4502 is a wireless data pass-through module based on CMT4502
Bluetooth Low Energy 5.0 chip. By connecting with MCU, it can quickly realize
the connection and data communication between the module and Bluetooth
devices such as smartphones and tablets. MCU takes up less resource and
development is simple.
2 Module Features
 Easy to use without any experience in Bluetooth stack application.
 User interface uses universal serial port design, full-duplex two-way
communication, minimum baud rate support 9600 bps;
 Default connection interval is 30 millisecond, fast connection;
 Support 2M symbol transmission;
 Support 244 bytes packet transmission;
 Support AT instruction for software reset and get MAC address;
 Support AT instruction to set Bluetooth connection interval and control
different forwarding rates (dynamic power adjustment);
 Support AT instruction to adjust Tx power, modify advertisement
interval, customize advertisement data, customize device identification,
set data delay (user MCU serial port reception preparation time),