2-10PCS HC-SR501 IR Pyroelectric Infrared IR PIR Motion Sensor Detector Module
ab 8,38 €
A pyroelectric infrared sensor is a sensor that can detect infrared rays emitted by humans or animals and output electrical signals. Application of pyroelectric transistors. In addition to being used in the well-known corridor automatic switches and anti-theft alarms, the application prospects in more fields are promising.
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