Canon LC-4 Wireless Remote Control for EOS 1Ds/1D Mark II/1D/20D/10D/D60/D30 Digital SLR's Extended-range wireless controller for EOS cameras with N3 remote control sockets Enhanced, quick-lock-type connector on receiver unit Remote shutter capability with maximum distance of 300 feet Highly portable and easy to operate Compatible with EOS 20D, 10D, 1D, D60, D30, D2000, 1V, 1V HS, 3