HC-SR501 PIR Motion Detector Sensor

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Automatic induction: When someone enters its induction range, enter the high level, people leave the sensor range isautomatically delayed off high. Output low. photosensitive control (optional): the module reserved for location, can be set to photosensitive control, strong light during theday or not induction. Photosensitive control is optional, the factory did not install photosensitive resistor. …
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