The IR extender can do IR signal extend by the CEC channel of the HDMI-Compatible port. You can do control to the IR Signal source device by using the received IR (infrared) signalby the IR Receiver. IR extend distance is up to 60m (it depends on the quality and length of the HDMI-Compatible cable). Control: To choose the CEC/IR extends function by manual, it needs to put the two IR Adaptor switch to IR status. Easy install & operation Usage instructions: 1. Use HDMI-Compatible cable to connect the two IR Adapter input female port 2. Connect one of the two IR adapter output port with the signal so urce, the other IR adapter output port to connect with display device 3. Connect one IR receiver with the IR-RX portof IR adapter 4. Connect the other IR emitter with the IR-TX portof IR adapter Specifications: IR extend distance: Up to 60m(Depends on the quality and length of the cable) Carrier frequency: Broadband (30KHZ-60KHZ) The receiving distance: 12M MAX operation current: 15mA Color:Black Material:PVC Package Contents: 1set * HDIM-Compatible infrared remote control repeater