RCWL-0516 Microwave Radar Sensor

The RCWL-0516 Microwave Radar Sensor is a compact module utilizing Doppler radar technology to detect motion within a range of 5-9 meters. Unlike traditional PIR sensors, it is not affected by temperature variations and can detect movement through thin walls, plastics, and glass, making it ideal for hidden installations. Operating at 4-28V DC (typically 5V), it draws minimal current (~3mA) and features a TTL compatible output. Common applications include burglar alarms, automatic lighting, interactive displays, and smart home automation. This sensor is highly favored by hobbyists and professionals for its stability, wide voltage range, and ability to detect subtle movements without requiring line-of-sight.