Aputure Pro Coworker Wireless Remote, RF Radio Shutter Release for Nikon D90, D3100, D3200, D5000, D5100, D7000, Replaces Nikon MC-DC2
Trigger your camera wirelessly with the Aputure Pro Coworker from Fotodiox.  By simply connecting the cable to your camera, you can control the shutter from up to 150 feet away. Signal will even travel through walls!