5Pcs HC-05 Wireless Bluetooth Serial Transceiver Module For Arduino
HC-05 could be setted to master or slave by user. HC-06 can only be master or slave which could be customized.
Wiring(only need 4 wires): RX to RXD / TX to TXD / GND to GND / 3.6V to 6V
Note: This module does not suitable for IOS system.
5 x HC-05 wireless bluetooth serial transceiver module