Serial 4 Pin RF Transceiver Module HC-06 RS232 With backplane #E1

Serial 4 Pin RF Transceiver Module HC-06 RS232 With backplane #F10

3.3V HC-05 Serial RS232 TTL RF Transceiver Module *nl

Serial 6 Pin RF Transceiver Module HC-05 RS232 Slave #iw

Serial 6 Pin RF Transceiver Module HC-05 RS232 Slave *yt

Serial 6 Pin RF Transceiver Module HC-05 RS232 Slave #E5

Serial 6 Pin RF Transceiver Module HC-05 RS232 Slave *lh

3.3V HC-05 Serial RS232 TTL RF Transceiver Module *yt