HC-06 Bluetooth RF Transceiver Module1. a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the Bluetooth is connected through..

HC-05 Bluetooth RF Transceiver ModuleThis class 2 Bluetooth module comes programmed with firmware that allows it to pass the output of a serial communications port (default is 9600 baud) over a Blueto..