JDY-31 Bluetooth Serial Supports SPP Compatible HC-05 HC-06 Slave CC2541 Module

30ft Wireless Bluetooth RF Transceiver Module serial RS232 TTL HC-05 for arduino

Arduino Android IOS HM-10 BLE Bluetooth 4.0 CC2540 CC2541 Serial Wireless Module

JDY-31 Bluetooth Serial Supports SPP Compatible HC-05 HC-06 Slave CC2541 Module

Wireless Serial 6 Pin Bluetooth RF Transceiver Module HC-05 RS232 Master Slave