The 3-in-1 advanced wireless remote and trigger provides photographers with a vast array of external control options to maximize your flash photography options. You can connect the REFLEX with your studio flash or speedlite to trigger synchronously. Four channels per receiver allow you to synchronize up to 16 strobes and flashes at once. You can also mount the transmitter onto your camera and attach the receiver to your speedlight hotshoe in order to wirelessly control it. Additionally, it can serve well as a remote shutter that can trigger your shutter in autofocus, single, continuous, bulb modes and more. Compatible with Nikon D90, D5000 digital SLR cameras.