Wireless Trigger Set Yongnuo RF603C II with Cable C1 for Canon — radio remote flash trigger kit

Yongnuo RF603C II with Cable C1 for Canon is a wireless radio trigger kit designed to reliably trigger off-camera flashes and provide remote shutter release for Canon cameras. The kit includes two transceivers that attach to Canon-compatible hot shoes and communicate via radio signals to synchronize flash firing and shutter actuation. The C1 cable adapts a single-pin connection for use with compatible camera shutter ports or PC-sync interfaces, allowing integration with a range of flash and camera setups for studio and location photography.

Advantages

The RF603C II offers dependable wireless triggering through radio transmission, reducing the need for line-of-sight alignment. Compact transceivers serve as both transmitter and receiver, simplifying setup and reducing gear weight on camera. Inclusion of the C1 cable increases connection flexibility for cameras or flashes that use single-pin shutter or PC-sync connections. The units provide straightforward plug-and-play operation with Canon hot shoe compatibility and stable synchronization for most standard flash units.

Suitable for

• On-location portrait and event photography where off-camera flash is needed
• Studio setups requiring multiple flashes synchronized remotely
• Remote shutter release for single-camera timelapses or long exposures
• Photographers seeking a compact, travel-friendly wireless trigger solution

Key specifications

• Operating method: Radio-frequency wireless triggering
• Compatibility: Canon hot shoe standard for flash mounting and camera interface
• Included accessories: Two transceiver units and one C1 single-pin cable for shutter/PC-sync connection
• Functionality: Transceivers operate as transmitter or receiver (transceive mode)
• Range: Typical usable range suitable for studio and moderate on-location distances
• Power supply: Battery-powered transceiver units (user-replaceable batteries)
• Mounting: Hot shoe foot for direct flash or camera attachment

How to use

Mount one RF603C II unit on the camera hot shoe and place the second unit on the off-camera flash or in the flash shoe. If remote shutter release is required, connect the C1 cable between the transceiver and the camera’s single-pin shutter or compatible sync port. Switch both transceivers to the same channel and power them on. Compose and focus the frame on the camera, then fire the shutter; the radio link will trigger the remote flash in synchronization with the camera shutter. Replace batteries as needed and ensure secure hot-shoe seating for reliable contact.

Usage recommendations

For stable performance, use fresh batteries in both transceivers and avoid placing radio-blocking obstacles directly between units. Verify channel selection and test trigger-fire synchronization before critical shoots. When using the C1 cable, confirm the single-pin connection matches your camera or flash port to prevent misfiring. Keep contact surfaces clean and store units in a dry environment when not in use.