Hi-Link HLK-B40 Bluetooth Transparent Transmission Module User Manual

This user manual is for the Hi-Link HLK-B40 Bluetooth Transparent Transmission Module, a master-slave integrated module for short-range wireless communication. Learn more about terminology such as GATT and BLE. Find out about features like OTA and how to pair and bind devices for secure communication.

Bluetooth SPP Serial Port Transparent Transmission Module User Manual

This user manual provides all the necessary information about JDY-31 Bluetooth Backplane, a Bluetooth SPP serial port transparent transmission module. With its AT command instructions and applications, it is ideal for automotive ODB testing equipment, medical equipment, smart home control and more. Download the manual now.