1x HC-SR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector
1,59 €
Product Type: HC--SR501 IR Sensor Module. to bottom or from bottom to top direction passing, dual IR not detected changes in the distance, no difference value, the sensor insensitive or does not work; so the sensors should be installed dual direction of the probe with human activities as much as possible parallel to the direction of maximum to ensure that the body has been passed by the dual sensor probe.
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