STB Wifi Infrared Remote Control 40 keys ABS Shell Black 195*48*25 mm

 Infrared TV Remote Control With Forty Keys / ABS Black Shell / STB

Our 40 keys controller is a kind of wireless remote control devices, using modern digital encoding bai code technology, the key information coding, the transmission light waves by the infrared diode, light waves by the receiver of the infrared receiver to receive the infrared signal into electrical signal, into the processor to decode, demodulating the corresponding instructions to achieve control set-top boxes and other equipment to complete the required operation requirements.A lot of electric equipment use infrared ray remote control, so what is the working principle of infrared ray remote control?

The visible light visible to the human eye is arranged in order of wavelength from long to short, red, orange, yellow, green, turquoise, blue, and purple.The wavelength range of red light was 0.62 ~ 0.76 m.The wavelength range of purple light is 0.38 to 0.46 m.Light with wavelengths shorter than violet is called ultraviolet, and light with wavelengths longer than red is called infrared.

Infrared remote control is the use of the wavelength of 0.76 to 1.5 m near infrared transmission control signal.

The infrared remote control system is usually divided into two parts: transmitting and receiving.

The main component of emitting part is infrared led.It is actually a special light-emitting diode, and because it is made of a different material from ordinary light-emitting diodes, it emits infrared light rather than visible light when a voltage is applied to both ends