Commlite T320 4 in 1 Wireless TTL Flash Trigger Channel 7 for Canon Nikon Sony Pentax Olympus wirelessly triggering studio flashes and flashguns wired and wirelessly remote control waking up flashguns, TTL-pass through in one universal for Canon and Nikon, can better satisfy users photography requirement Compatible with other ComTrig series flash triggerse.g: H550,G430