Infrared sensor switching circuit principle.Features: It’s automatic control product based on infrared technology. When someone enters the switch sensing range, the special sensor detects the change of the infrared spectrum of the human body, and the switch automatically turns on the load. If the person does not leave and is active, the switch is continuously turned on; After the person leaves, the switch automatically turns off the load in delayed time. And the light turns on when person comes, while turns off when person leaves, which is convenient, safe and energy-saving.
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