Includes WR-R10 wireless remote control transciever, WR-T10 wireless remote control transmitter and WR-A10 wireless remote adapter. Use radio frequencies to pair the transmitter and reciever. The adapter is designed to work with the transceiver, allowing it to be connected to select Nikon DSLRs with a 10-pin connector, to wirelessly control the shutter release. DSLRs without a 10-pin connector do not need the adapter. The WR-T10 can be paired with an unlimited number of cameras with a WR-R10 unit attached. Useful for triggering the shutter remotely when using slower shutter speeds, to prevent camera movement.