RCWL0516 Doppler Radar Microwave Motion Sensor The RCWL0516 is a sensitive microwave motion detection module designed for reliable, accurate sensing applications. Unlike conventional passive infrared (PIR) sensors such as the HCSR501, which detect heat signatures, the RCWL0516 uses Doppler radar technology. It determines movement by detecting changes in emitted microwave frequency, making it effective at sensing through certain nonmetallic materials and in varied environmental conditions. Key Features and Benefits: Advanced Doppler radar detection for stable and precise motion sensing sensitivity with consistent performance over time Large detection angle for wide coverage, up to 360 degrees without blind spots Capable of detecting inert moving objects with sufficient density and volume Reliable operation unaffected by ambient temperature and lighting changes Compact size for easy integration into different devices and projects Specifications: Operating Voltage: 428V Output Voltage: 3.23.4V Detection Distance: 57 meters Module Size: 35.9 x 17.3 mm (1.41 x 0.68 inches) Output Signal: (3.3V) on motion detected, 0V otherwise Continuous level TTL signal output while motion is present Practical Applications: 1. Human presence detection for automated lighting systems, enabling lights to switch on when motion is detected and off when no movement is present 2. Integration into smart security devices for perimeter monitoring and intrusion detection 3. Industrial automation systems to sense movement of machinery components or materials The RCWL0516 module delivers dependable motion sensing in situations where traditional PIR sensors may be limited. Its microwave radar technology makes it suitable for projects requiring wideangle coverage, detection through certain surfaces, and consistent performance in diverse operational environments.