Product Description HC-SR501 is based on infrared technology, automatic control module, using Germany imported LHI778 probe design, high sensitivity, high reliability, ultra-low-voltage operating mode, widely used in various auto-sensing electrical equipment, especially for battery-powered automatic controlled products. Specification: Use BISS0001 signal processing IC, sanyo genius regulator Voltage: 5V – 20V Power Consumption: 65mA TTL output: 3.3V, 0V Delay time: adjustable (3 sec – 10 minutes) Lock time: 2 sec Trigger methods: L – disable repeat trigger, H enable repeat trigger Sensing range: less than 120 degree, within 7 meters Temperature: – 15 ~ +70 Dimension: 32*24 mm, distance between screw 28mm, M2, Lens dimension in diameter: 23mm #Sensor tutorial : https://create.arduino.cc/projecthub/diyelectronicsprojects/arduino-with-pir-motion-sensor-fd540a