HCSR501 PIR Motion Sensor Module The HCSR501 is a reliable passive infrared (PIR) motion sensor designed for automatic motion detection and control applications. It offers consistent performance, wide compatibility, and simple integration with electronic projects and devices. Key Features: Operating voltage range: DC 4.5 to 20V for versatile power options Ultralow quiescent current: <50uA, ensuring energy efficiency Trigger modes: L mode: Nonrepeatable trigger (sensor waits until motion stops before retriggering) H mode: Repeatable trigger (default setting, retriggers as motion continues) Detection cone angle: Less than 100 degrees, ideal for focused monitoring Adjustable output timing: 0.5 seconds to 200 seconds via builtin potentiometer 105 Operating temperature: 15°C to +70°C, suitable for various environments Compact design for easy installation in a wide range of devices Functionality: When motion enters the sensor's detection range, the output switches , activating connected devices. Once motion is no longer detected, the sensor maintains the output for the set delay time before switching low to turn off devices. This allows automatic and efficient control without manual input. Practical Applications: 1. Home automation: Automatically turn on lights, fans, or alarms when someone enters a room. 2. Security systems: Activate buzzers or cameras upon motion detection to protect property. 3. Industrial control: Manage machinery such as automatic doors, washing machines, or dryers to operate only when motion is present. Compatibility and Integration: The HCSR501 can be used with various electrical devices including incandescent lamps, fluorescent lamps, buzzers, automatic doors, electric fans, and other appliances. Its standard voltage range makes it compatible with common microcontroller platforms and electronic circuits. Performance and Reliability: This sensor provides accurate motion detection with minimal false triggers due to its defined cone angle and stable electronics. Its adjustable timing makes it flexible for short or extended activation periods, catering to different operational needs. The HCSR501 PIR motion sensor delivers an efficient, compact, and dependable solution for motionactivated control in both residential and industrial applications.