HC-SR 501 PIR infrared sensor module is based on infrared technology, automatic control products. High sensitivity, high reliability, low power consumption, low voltage operation mode. Widely used in various auto-sensing electrical equipment, especially for battery-powered automatic control products. HC-SR501 PIR Motion Sensor (Detector) Module – Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc. Product Description:  PIR Read more about HC-SR501 Pyroelectric Infrared PIR Motion Sensor Detector Module for ARDUINO AVR[…]