The JF-U2 wireless flash trigger works as a wireless remote trigger for your off-camera flash units or studio flashes.There are total 16 channels selectable and the flash sync speed is 1/250s
Control distance:30 meters
Package include:1 transmitter and 2 receivers
Transmitter:Powered by 1x 23A battery
Receiver:Powered by 2x AAA battery
Attention:The wireless flash trigger can be also used as a wireless remote shutter release for your camera with the JJC optional camera release cable.