The Yongnuo RF605C is a versatile wireless flash trigger transceiver designed for Canon DSLR cameras. As a transceiver, it can function as both a transmitter (mounted on your camera) and a receiver (attached to your flash), making it ideal for controlling off-camera speedlights or studio strobes. Compatible with Yongnuos RF-603 series, the RF605C offers reliable performance, group control, and multiple channels to avoid interferenceperfect for professional and hobbyist photographers alike. Key Features & Functions Brand & Model: Yongnuo Digital RF605C (for Canon) Type: Wireless Flash Trigger Transceiver (acts as both transmitter and receiver) Compatibility: Designed for Canon cameras and flashes, works with Yongnuo RF-603 series Display & Controls: Backlit LCD screen for easy operation Channel Selection (CH): Choose from multiple channels to prevent interference Group Selection (AF): Control up to six groups of flashes individually Mode Button: Switch between TX (transmit) and RX (receive) modes Dedicated Group Buttons (A/D, B/E, C/F): Enable or disable flash groups instantly Connections: Standard hot shoe mount for cameras PC Sync Port for studio strobes or wired triggering Range & Performance: Reliable long-range wireless triggering (ideal for studio or outdoor use) Condition Excellent condition, fully tested and ready to use.