Details: The LC-3 Wireless Controller Set is an infrared strobe-type wireless controller system with remote release capability, designed for use with cameras having 3-pin remote control sockets (EOS & T-series). The LC-3 has a maximum range of approximately 100m.and its release function is equipped with a 2-stage switch for use with AF cameras. The LC-3 provides three transmitter channels (A, B, C) , and can also be set to ALL to allow a single controller to operate any number of cameras equipped with receivers within a given area. Both transmitter and receiver operate on four AA Alkaline batteries only.