24G Millimeter Wave Human Presence Sensor for Smart Home Linkage

This 24G millimeter wave human presence sensor offers real-time detection of human presence using radar technology, differing from conventional infrared PIR sensing. It connects through Wi-Fi or ZigBee protocol to the Graffiti ecosystem, allowing automatic settings that link lights, switches, sockets and curtains via the Graffiti or Smart Life app on Android and iOS. Powered continuously by a USB cable at 5V 2A, it suits smart home setups where ongoing presence monitoring is needed. The unit is black, measures 10 x 10 x 4 cm, and is designed for fixed installation. For accurate operation, use a quality 5V 2A charging head and avoid aiming the device at appliances such as air conditioners, refrigerators, computers or fans. Because the radar is omnidirectional, it can detect people up to 1.5 metres behind the device, so the back should be positioned against a wall. Fixing the sensor securely helps prevent loosening and maintains consistent performance. This product is intended for indoor smart home use where linkage with other Graffiti-compatible devices is required.

Features and Construction

The sensor uses 24G millimeter wave radar for real-time human presence detection, with Wi-Fi or ZigBee connection options. It is built for continuous USB power and integration with the Graffiti app ecosystem.

Material and Build

The device has a black housing and measures 10 x 10 x 4 cm. It is powered via USB cable at 5V 2A for real-time operation. The source text does not specify further materials or build details beyond these points.

Size and Practical Fit

At 10 x 10 x 4 cm, the sensor is compact enough for wall mounting. It should be fixed properly to avoid loosening, and the back needs to be against a wall because the radar can detect movement up to 1.5 metres behind the unit.

Uses and Placement

This sensor is suited to smart home automation where presence detection triggers linked devices. Placement away from appliances and with the back against a wall supports reliable performance.

Event or Professional Use

In setups requiring automatic lighting, switching or curtain control, the sensor can link with compatible devices through the Graffiti or Smart Life app. It uses Wi-Fi or ZigBee protocol, with ZigBee requiring a matching Graffiti ZigBee gateway.

Everyday Home Use

For daily home automation, the sensor can be connected to lights, switches, sockets and curtains via app automatic settings. It supports Android and iOS platforms and runs on continuous USB power at 5V 2A.

Benefits and Buying Value

The product provides real-time human presence detection through 24G millimeter wave radar and integrates with the Graffiti ecosystem for device linkage. It avoids battery changes by using USB power.

Reuse and Low Maintenance

Because it is USB-powered, there is no need to replace batteries. Keeping the unit fixed and avoiding interference from appliances supports consistent operation. The source text does not provide further maintenance details.

Why Choose This Product

This sensor offers a 24G millimeter wave radar approach rather than infrared PIR sensing, with Wi-Fi or ZigBee connectivity and app-based linkage to lights, switches, sockets and curtains. It measures 10 x 10 x 4 cm and comes with a USB power cable for immediate setup.