Microwave Radar Sensor Module (RCWL-056)

The Microwave Radar Sensor Module (RCWL-056) is a high-sensitivity, non-contact motion detector based on Doppler radar technology. Unlike traditional PIR sensors, it can sense movement through thin walls, glass, or plastic, making it ideal for smart lighting, intrusion alarms, and IoT automation.

Using 3.2–4 GHz microwave signals, this module detects motion by measuring the frequency shift caused by moving objects, offering 360-degree coverage and reliable operation in varying temperature or light conditions.

🔹 Key Features

• Microwave Doppler Radar Technology: Detects motion through most non-metallic materials.

• Wide Detection Range: ~5–7 m radius with 360° sensing angle.

• Stable in Any Lighting: Works in complete darkness or bright daylight.

• Adjustable Output Timing: ~2 s default (extendable with external capacitor).

• Compact & Lightweight: Easy to embed in IoT devices or custom enclosures.

🔹 Technical Specifications

• Operating Voltage: 4 V – 28 V DC (typical 5 V)

• Operating Frequency: 3.2 GHz – 4 GHz

• Output Voltage (High): 3.3 V

• Output Type: Digital (HIGH when motion detected)

• Current Consumption: ~3 mA (standby), ~100 mA (active)

• Detection Distance: ~5–7 m (adjustable via capacitor)

• Delay Time: Default 2 s (configurable)

• Operating Temperature: –20 °C to +80 °C

• Dimensions: ~35 mm × 17 mm × 9 mm

🔹 Applications & Use Cases

• Smart Lighting Systems: Auto-switch lights when motion is detected.

• IoT Security & Intrusion Alarms: Detect human presence through doors or walls.

• Robotics & Automation: Trigger actions when objects move nearby.

• Industrial Equipment Monitoring: Sense human or machine movement in factories.

• Home Automation: Integrate with Arduino or Raspberry Pi for smart-home applications.

🔹 Advantages for Makers & Engineers

• Works where PIR fails (e.g., behind thin barriers).

• 360° detection zone—no need to align sensor direction.

• Compatible with Electronics Components and Tools and Accessories for easy prototyping.

🔹 Safety & Precautions

• Avoid metal enclosures, which block microwaves.

• Provide stable 5 V supply for consistent operation.

• Install away from strong electromagnetic interference for best accuracy.

🔗 Helpful Internal Links

• Find more Power Supply modules for 5 V operation.

• Pair with Arduino and Accessories for smart automation builds.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The RCWL-056 Microwave Radar Sensor Module provides accurate, 360-degree motion detection through most non-metallic materials, making it perfect for smart lighting, security systems, robotics, and IoT automation projects.