The Nikon WT-5A Wireless Transmitter puts the power of the camera controls virtually anywhere. The WT-5A transmits images to a FTP server or computer twice as fast its predecessor, the WT-4A transmitter. You can operate your camera using a PC, tablet, or compatible electronic device with this wireless transmitter. The WT-5A has a range of 590 feet. It is compatible with Nikon D DSLR series. The UT-1 Communication Unit is required for use with Nikon D800 and D700 DSLR series.