ITEM NAME:HC-SR501 PIR Human Motion Sensor Body Pyroelectric Infrared SR501 Detector BGH.HC-SR501 Human Body Infrared Sensor Module IR Pyroelectric Infrared PIR Detector. HC-SR501 Adjusts Infrared Pyroelectric Infrared PIR Motion Sensor Detector Module. It Has A High Value Of 3.3 Volts And A Low Value Of 0 (It Can Be Turned On Or Off).
