Description:1.Wide angle, strong signal, long distance. Resistant to ambient light effects. Works with all 38-56kHz IR remote control and devices with an IR input port.2.Wide voltage adaptation, low power consumption, high sensitivity, excellent anti-interference characteristics, tiny, elegant stick-on design.3.Widely used in set-top boxes, speakers, LED light bar controllers, driving recorders, digital photo frames, household appliances, and other various products to assist in extending remote control reception. How to use: Plugs directly into the IR IN port on the back of the AVR, cable box, set-top box, AV equipment, etc. Stick the infrared emitter head to the side of the IR sensor, do not cover it, otherwise, the remote control will be insensitive. Note: 1.