RCWL-0516 Doppler radar motion sensor module, 7 m range, for Arduino STM32 ESP

RCWL-0516 Doppler radar motion sensor module

The RCWL-0516 Doppler radar is an advanced microwave motion sensor for Arduino, ESP8266, ESP32, and Raspberry Pi. It is designed for precise detection of objects across a full 360° field. Using electromagnetic waves at approximately 3.15 GHz, the sensor can register motion at distances up to 7 meters. Thanks to a wide supply voltage range of 4 V to 28 V, the module is highly versatile in a variety of electronics projects. When motion is detected, the output goes high at 3.3 V.

The module operates reliably under varying environmental conditions. Compact dimensions of 35 mm x 17 mm allow easy integration into existing setups. For correct operation, it is recommended to leave at least 1 cm of clearance on each side of the board.

Key technical specifications

• Supply voltage: 4 V - 28 V
• Operating frequency: approximately 3.15 GHz
• Output voltage: 3.3 V
• Detection angle: 360°
• Maximum detection distance: up to 7 meters
• Dimensions: 35 mm x 17 mm

Example applications

• Security systems and home alarms
• Building automation and smart lighting
• DIY projects based on microcontrollers
• Contactless switches for electrical devices
• Presence monitoring in enclosed spaces

Benefits

• High sensitivity and omnidirectional detection range
• Ability of waves to pass through thin non-metallic obstacles
• Wide supply voltage range for easier integration
• Compact size suitable for mounting in small enclosures
• Simple output signal handling on popular platforms