Infrared Emitter LED is a high power solid-state lighting device which is commonly used in a wide variety of remote control and communications projects. It is matched with silicon photodiode and phototransistor. There are many advantages when comparing to other LED: (1) environment friendly; (2) high radiometric power, excellent thermal management and high energy efficiency for infrared applications; (3)low thermal resistance with high speed response; (4)fully dimmable; (5)high- reliability and long life with high-output power, low power consumption. Infrared Emitter LED is available with different color, intensities, epoxy colors, etc. The wavelengths include 940nm, 880nm, 850nm etc. It is widely used in floppy disk drive, infrared sensor, infrared monitor, free air transmission, infrared detector, infrared light, automatic control system, infrared emitters of remote control for tvs, audios, dvr, pvr, video recorder, satellite receiver, air- conditioners, car electronics, optoelectronic switches, and other infrared system.