RCWL-0516 Microwave Radar Motion Sensor Module

The RCWL-0516 microwave motion sensor module is a cost-effective alternative to traditional Passive Infrared (PIR) sensors. Instead of detecting heat signatures, this module utilizes Doppler radar technology to detect moving objects within its range.

With a detection range of up to 7 meters and a wide operating voltage (4-28V), it integrates easily with microcontrollers like Arduino and Raspberry Pi. The TTL output provides a clear signal upon detection, and the CDS pin allows for sensor disable functionality if required.

Specifications

• Supply Voltage: 4 to 28 V DC
• Operating Frequency: ~3.18 GHz (ISM band)
• Detection Range: Approximately 5 to 7 meters
• Output Signal Duration: Variable by default (approx. 2-3 seconds)
• Output Level: TTL (3.3 V) HIGH upon detection
• Pins: VIN, GND, OUT, CDS (disable), 3V3 (regulated 100 mA output)
• Transmit Power: ~20 mW (typical)