This millimeter wave radar sensor utilizes advanced 24GHz mmWave technology to detect human presence with precision, distinguishing between static occupants and moving individuals through highly accurate motion and micro-motion detection. The sensor is engineered with a compact polycarbonate housing that ensures reliable signal transmission and straightforward surface mounting. Its internal antenna design and signal processing algorithms deliver stable performance even in environments with heat sources, air currents, or direct sunlight where traditional infrared sensors may generate false triggers.

The unit operates on Zigbee 3.0 wireless protocol, requiring a compatible TUYA hub for initial setup and cloud-based control, while also supporting direct integration with Home Assistant via Zigbee2mqtt for advanced local automation scenarios. Constructed with a durable outer shell and precision injection-molded components, the sensor maintains consistent detection ranges up to approximately 6–8 meters in a typical room configuration, with a detection angle of around 120 degrees. Power consumption remains notably low at less than 0.5 watts standby, making it suitable for battery-free, mains-powered installations.

The stark white finish and low-profile form factor allow it to blend unobtrusively into ceiling or wall mounting positions. Firmware stability is maintained through over-the-air updates via the associated hub, and the sensor’s hardware has been designed with robust electrical surge protection to ensure longevity in residential or light commercial settings.

From an operational standpoint, the sensor responds to occupancy changes within roughly one to two seconds, reporting status updates through the Zigbee network without noticeable latency. The device supports configurable detection sensitivity and hold time through the hub’s app, offering flexibility for scenarios such as lighting automation, HVAC control, and security monitoring.

Its ability to detect stationary persons—like someone sleeping or sitting still—sets it apart from conventional motion sensors, making it a practical component for smart home systems focused on energy efficiency and comfort. The affordable price point of three US dollars positions this sensor as a cost-effective entry for users building or expanding a Zigbee-based presence detection network.