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The wireless remote control using what principle?

The remote controller is a wireless transmitter, the digital coding technology, modern, encodes the key information, transmitting light through the infrared diodes, infrared signal into electric signal light by the infrared receiver receiver will receive, the processor decodes the demodulated, the corresponding instruction to control equipment. Wireless remote control in general there are two most common, is a household electrical appliance infrared remote control mode is used, the other is anti-theft alarm equipment, remote control, remote control car doors and windows and other commonly used radio remote control mode.