The IR extender can do IR signal extend by the CEC channel of the HDMI port. You can do control to the IR Signal source device by using the received IR (infrared) signal by the IR Receiver.Features & Specificationl It can do control to the IR Signal source device by using the received IR (infrared) signal by the IR Receiver.l IR extend distance is up to 25m ( it depends on the quality and length of the HDMI cable)l Control: To choose the CEC/IR extends function by manual (it needs to put the two IR Adaptor switch to IR status.l MAX operation current:15mal Weight:35g Housing: plastic box２、To connect one of the two IR adaptor Output port with the HD Source， the other IR adaptor Output port to connect with the Display.３、 Note: Pls use the standard HDMI Cable.！！Package Includes:1 x IR Receiver1 x IR Transmitter2 x IR HDMI Adapter (not incluede hdmi cable)