5.8 GHz microwave radar sensor, 3-8 m intelligent trigger module, 3.3-20 V DC power supply for home automation

1. Microwave sensors using a planar antenna and echo reception. 2. The switch activates the sensors. 3. The sensors emit high-frequency electromagnetic waves and receive their echo. 4. The sensors detect variations within the echo. 5. The sensors detect minute movements within their detection zone. 6. A signal is sent to the microcontroller for instruction execution. 7. The signals can be detected through doors, glass, and thin walls. 8. A detection result is obtained when a person or object moves toward the sensor. 9. This product exhibits high resistance to interference, being virtually insensitive to wind, heat, and other environmental factors. Parameters: 1. Operating Voltage: 3.3–20 V DC; 2. Standby Current: < 3 mA; 3. Transmit Power: < 2 mW; 4. Ambient operating temperature: -20°C to +80°C; 5. Triggering: Repeated triggering (default); 6. Output signal: TTL level; high → 3.3V / low → 0V; 7. Detection angle: 360° (spherical), no dead zone; 8. Detection range: 3 to 8 meters (optional). Default setting: 7 meters; 9. Operating delay: from 1 second to several hundred seconds. Default setting: 30 seconds; Color: see image; Materials: plastic and metal; Package contents: 1 module, 1 cable. Only the above-mentioned contents are included. Note: The color of the item in the photo may slightly differ from the real thing due to light reflection and your monitor settings. A margin of error of +/- 1 to 3 cm is possible.