1 Accept IR signals such as normal radio, TV and others 2 Infrared radiation cable IR emitter cable with 3.5mm Stereo Plug IR Extender Emitter Receiver cable Sticks directly onto the AV equipmentThe IR emitter cable is applicable to the infrared control system, HTPC equipment systems and so on. It's small and easily placed. The infrared forward line is applicable to all kinds of remote control ...