SR501 PIR Sensor

From the shop's description

SR501 PIR Sensor The SR501 PIR Sensor is a passive infrared motion detector designed for reliable motion sensing in various applications. It utilizes a pyroelectric sensor and Fresnel lens to detect infrared radiation changes caused by moving objects. The module features adjustable sensitivity and delay time, allowing customization for different environments. Its compact design and low power consumption make it suitable for battery-powered devices and embedded systems. Features Passive infrared motion detection. Adjustable sensitivity and delay time. Dual trigger modes: repeatable and non-repeatable. Wide operating voltage range. Low quiescent current for energy efficiency. Compact size with mounting holes for easy installation. Specifications Parameter Value Operating Voltage 4.5–20VDC Quiescent Current <50µA Output Level High: 3.3V / Low: 0V Delay Time 0.3s–200s (adjustable) Block Time 2.5s (default) Detection Angle <120° Detection Range Up to 7meters Operating Temperature -15°C to +70°C Dimensions 32mm x 24mm Lens Diameter 23mm PINOUT Pin Description VCC Connect to 4.5V to 20V. OUTPUT Digital sensor output (active HIGH) – Normally connects to a digital input pin on a microcontroller. GND Connect to system ground. This ground needs to be in common with the microcontroller. Applications Automated lighting control. Security and intrusion detection systems. Energy-saving devices. Home automation projects. Robotics and motion tracking. Package Contents 1x SR501 PIR Sensor. Documents SR501 Sensor datasheet .