Aputure Pro Coworker Wireless Remote, RF Radio Shutter Release for Sony A100, A200, A300, A350, A500, A550, A560, A580, A700, A850, A900, SLT-A33, A35, A55, A57, A77, Konica Minolta Maxxum 5D, 7D, Replaces RCC-S1
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. The signal will even travel through walls!