eforCity TOTHIREXRP01 Infrared Extender System Kit, Black This kit allows you to use an existing infrared (IR) remote control to operate up to 18 audio/video (A/V) components Use an existing IR remote control to operate hidden audio video components Allows IR signals to pass through solid doors or walls, line-of-sight to the components is not required The system allows for remote control of up to 18 devices Confirmation LED built-in to the IR receiver acknowledges receipt of IR commands