Vanco 280751 Compact 1 Zone 4 Source IR Kit Allows for the transmission of IR Signals from up to 4 IR Emitters to one IR Receiver A total of 4 IR Emitters can be supported IR Receiver works in most lighting environments, including CFL Range: 40 ft. at 38 kHz & 25 ft. at 56 kHz IR Transmit Frequencies: 38 kHz & 56 kHz