HC-05 Wireless Bluetooth Transceiver Module Compatible version

Description: can be set to master or slave by the user. can be master or slave only can be customized. Wires (only need 4 wires): RX to RXD / TX to TXD / GND to GND / 3.6V to 6V Power: 3.3V Note: this unit is not suitable for system. Package includes: 1 x Wireless Bluetooth Serial Transceiver Module