ATW-R3210 receiver and ATW-T3201 body-pack transmitter with cH-style screw-down 4-pin connector. Select a microphone or cable with a cH-style screw-down 4-pin connector to complete the system. Available separately, the AT-cWcH Adapter Cable enables wireless microphones with a cW-style locking 4-pin connector to be used with body-pack transmitters that have a cH-style screw-down 4-pin connector.