The Additional Capture System Receiver Module for Nikon from Hahnel allows you to remotely trigger 2 devices from distances up to 328' with the system's optional transmitter. Trigger 2 cameras, 2 flashes or a combination of the two. The receiver even has a topside hot shoe so that you can trigger camera and flash concurrently. The unit is powered by 2 separately purchased AA batteries. Additional Captur accessories are available for Time-lapse Photography, High-Speed, Motion and Wildlife Photography. Please see the Features section of this listing for compatibility.