a), It can be used as wireless remote shutter release.
1), Has the function of Auto-Focus, Continuous shooting, Long Exposure, Half-Way Pressing, Full-way Pressing
2), Press the bottom of transmitter to control camera.
3), Press the camera shutter bottom to control camera.
4), If your camera doesn't have the hot shoe, you can use the shutter release cable which can connect camera and receiver. (Please see the picture)
b), It can be used as wireless Flash trigger.
1), Has the function of firing the flash speed lite,
---Amount the transmitter into hot shoe of camera, connect the receiver with the flash speed lite, please half-way of shutter button to wake up the flashgun at the same time, the green signal light will be bright for some seconds, and then full press shutter button to fire the flashgun and take a picture. (This " Wake up " function is only support the flashgun which having the sleep mode)
------One transmitter can trigger more than 2 receivers at the same time, so you can trigger more than 2 flashes at the same time. You can buy extra receivers depends on your flashgun., and you can also buy the Sync PC cable separately.
2), It can fire the studio light
---There is a 3.5mm cable with 6.35mm adapter, you can connect 3pins plug with the receiver, and connect the 3.5mm plug with the studio light, but if your flashgun plug size just can support the 6.35mm plug, you can use the 6.35mm adapter to cover it.