Yongnuo RF-603 C1 Shutter Release Cable for Canon Rebel 300D/350D/400D/450D/500D/550D/1000D Series Connects the RF-603 transceiver to your camera to work as a wireless shutter release control to trigger your camera Compatible with Canon Rebel 300D/350D/400D/450D/500D/550D/1000D Series Includes (1) C1 shutter release cord Transceivers NOT included