YueYueZou&reg; IR Repeater Remote Control Extender System (12 Emitters 1 Receiver) To Have a Nice Home Theater : The IR repeater can control devices that are hidden behind doors or in other rooms! So just Hide your multiple Players/ Devices in cabinet or console! Worry-free Way to Control: The receiver can pick up the signal from the remote controller, which has got a convenient IR confirmation LED. Control Device at Your Own Will: 12 emitters enable you to send the signals to the A/V components. May ALSO be powered by USB cord as well (USB power cord NOT included) Working Range: 34-60kHz operating range and 3.5mm mini plu. Receive Range: 8 Meter.