5.8GHz Microwave Radar Sensor – 6-9M Smart Switch Module

Upgrade your smart home or security setup with this 5.8GHz Microwave Radar Motion Sensor Switch Module. Powered by Doppler radar technology, this compact module delivers highly reliable, 360° spherical motion detection with a selectable range of 6–9 meters — making it an ideal choice for automated lighting, security systems, and industrial automation.

Made in Mainland China.

Why Choose This Microwave Radar Sensor?

• Ultra-strong anti-jamming performance: Virtually unaffected by wind, heat, or other common environmental factors — delivering stable, consistent readings.
• Wide voltage range (3.3–20V DC): Compatible with microcontrollers, Raspberry Pi, Arduino, and a wide range of DC-powered systems.
• 360° detection with no dead zones: Spherical sensing coverage ensures nothing goes undetected in the target area.
• Penetrates obstacles: Capable of detecting motion through doors, glass, and thin walls for versatile installation options.
• Adjustable detection range: Selectable between 6 and 9 meters (default: 8 meters) to suit different room sizes and applications.
• Low power standby: Quiescent current under 3mA and transmit power under 2mW — ideal for battery-powered projects.
• TTL-compatible output: High (>3.3V) / Low (0V) signal for direct MCU integration.
• Adjustable working delay: From 1 second to hundreds of seconds (default: 30 seconds).
• Wide operating temperature: Functions reliably from -20°C to +80°C.

How It Works

The sensor emits high-frequency 5.8GHz electromagnetic waves via a planar antenna and listens for changes in the reflected echo. Any motion — even subtle movement — within the detection range triggers the TTL output signal, which can be read by a microcontroller (MCU) to execute automated actions. It performs best when subjects move toward or away from the sensor.

Technical Specifications

Applications

• Intelligent & automated lighting control
• Home and commercial security systems
• Industrial automation and process control
• Motion-activated toys and interactive devices
• Battery-powered automatic control projects
• Auto-sensing electrical equipment

Installation Tips

• For best performance, position the sensor at least 3–4 meters from walls to minimize false triggers from the opposite side.
• Open areas provide the most responsive detection coverage.

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Frequently Asked Questions

Q: What is the detection range of the 5.8GHz microwave radar sensor module?

A: The detection range is adjustable between 6 and 9 meters. The default factory setting is 8 meters. You can specify your preferred range when ordering to suit different installation environments.

Q: Can this microwave radar sensor module detect motion through walls or glass?

A: Yes. Because it operates using high-frequency microwave signals, the sensor can detect motion through doors, glass panels, and thin walls. For optimal accuracy, it is recommended to mount the sensor at least 3–4 meters away from solid walls.

Q: Is this sensor compatible with Arduino and Raspberry Pi?

A: Absolutely. The sensor outputs a standard TTL-level signal (High >3.3V / Low 0V) and operates on 3.3–20V DC, making it fully compatible with Arduino, Raspberry Pi, and most other microcontroller platforms without any level-shifting circuitry needed for 3.3V systems.

Q: What makes this sensor resistant to false triggers?

A: This 5.8GHz radar module uses Doppler microwave technology, which is inherently resistant to environmental factors such as wind, air currents, and heat fluctuations — common causes of false triggers in passive infrared (PIR) sensors. This makes it much more reliable in real-world conditions.