The PlusX is the simplest PocketWizard radio trigger set ever. Just by attaching one PlusX to your camera and the other (in this set) to a remote flash using an included cable, setting both radios to the same channel, then you're ready to start taking pictures. The PlusX is what's called a transceiver incorporating both transmitter and receiver. It is compatible with all standard channel PocketWizard transmitters and receivers, so it's the perfect companion for any existing kit but equally well-priced to be your first choice for a new radio-trigger set. * High performance, easy to use remote trigger * Channel selection is as simple as turning a dial for 10 channels available * Backlit channel dial makes set-up quick and easy * Compact, lightweight unit is easy to carry with you anywhere * Range of up to 500 metres (1600 feet) * Simple LED lights show transmission and battery status * Fully compatible with all standard channel PocketWizard transmitters and receivers * Powered by 2 x AA batteries