Automatic or sensor faucets are bathroom faucets that can be turned on and off without physically touching them. Instead, the faucet uses an infrared, sonic, or other type of sensor to detect hand motion or proximity and activates water flow accordingly.
These Sensor faucet detect changes in infrared light caused by a hand waving in front of the faucet. An infrared emitter emits light, and a sensor picks up reflections or shadows to determine hand position.
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