A set of two Yongnuo RF603C II flash triggers with a C3 for Canon cable

The Yongnuo RF603C II kit includes 2 wireless flash triggers and a C3 cable for Canon cameras. Each unit can operate as a transmitter or receiver to trigger camera-mounted and studio flashes, or act as a wired or wireless camera remote.

The relocated power/mode switch selects transmitter-only or transmitter/receiver operation, allowing handheld triggering and helping extend battery life. The system can trigger an off-camera flash and a flash on the camera simultaneously, supports multiple cameras and flashes, and provides flash wake-up through the receiver.

• Frequency: 2.4 GHz; 16 channels; built-in antenna.
• Effective range: up to 100m, with up to 270m reached in tests.
• Flash synchronisation at shutter speeds up to 1/250 sec.
• Power supply: 2 AAA batteries per unit.
• Camera sync socket: 2.5mm; flash connections: standard PC sync and hot shoe; top-mounted hot shoe.
• Two-stage shutter button: autofocus, then shutter release.
• Supported flash port voltage: 5 V in transmitter mode and 300 V in receiver mode.
• Dimensions: 80x30x20mm (L x W x H); weight: 66g.