Avatto HE20 Wi-Fi microwave motion and presence sensor, USB 5V

Avatto HE20 is a compact motion and presence sensor that uses microwave detection and connects via Wi‑Fi. Powered by a 5V USB supply, the device detects movement and presence in indoor spaces, providing data for automation, lighting control, or security systems. Its Wi‑Fi connectivity allows remote status monitoring and integration with compatible smart home platforms that accept networked sensors.

Advantages

The microwave detection method provides reliable presence sensing through common indoor materials and is less affected by ambient light conditions than optical sensors. USB 5V power makes installation flexible using standard power adapters or USB power sources. Built-in Wi‑Fi enables remote access, real‑time alerts, and straightforward integration without additional wiring. The compact form factor supports discreet mounting and reduces visual impact in living or working environments.

Suitable for

• Room occupancy detection for automated lighting control
• Presence monitoring in offices, corridors, and meeting rooms
• Integration with smart home systems for security and energy saving
• Retrofit installations where running additional power lines is impractical

Key specifications

• Detection technology: microwave Doppler sensing
• Connectivity: Wi‑Fi (2.4 GHz, standard network protocols)
• Power supply: USB 5V input
• Mounting: indoor ceiling or wall installation options
• Detection capabilities: motion and presence (fine movement sensing)

How to use

Connect the Avatto HE20 to a stable 5V USB power source and place it in a position with a clear view of the monitored area. Use the device's Wi‑Fi setup procedure to join the local network, then configure detection parameters and notifications via the compatible app or the smart home platform. Position and sensitivity adjustments can be made to reduce false triggers and to cover the desired detection zone. Regularly ensure the USB power source and network connection remain active for continuous operation.

Recommendations

For optimal performance, install the sensor at a recommended height for the chosen environment (typically ceiling or high on a wall) and avoid placing it directly behind large metallic objects or very close to ventilation outlets. Test detection coverage after installation and adjust placement or sensitivity if needed. Use a stable, surge‑protected USB adapter to ensure reliable power delivery.