Pixel Opas Flash Trigger SLR Camera Wireless Shutter Release Speedlite Transceiver High Speed Sync 1/320s for Canon (1Pcs) Flash Trigger which supports flash and studio flash. lt can control camera to shoot remotely, camera control camera to shoot and group trigger. Operation range: 400M, sync speed: 1/320s; Shutter release: single shoot; Sockets: PC sync, 3.5mm, USB; Trigger method: hot shoe Wireless Remote Shutter and flash control function activate at the time. Opas is a professional grouping flash transceiver which can be activated off-camera trigger, off-camera flash group control and shutter remote shooting. It can be used as Pixel King receiver (does not support TTL and HSS) Flash as well as compact flashes are triggered in manual mode, supports 3 different groups and 4 channels. Uses global free FSK 2.4GHz and is compatible with high voltage flashgun and studio flashes, uses 2 standard AA batteries and also the USB socket for power supply.