Compact millimeterwave human presence sensor for reliable motion detection and seamless smart home integration. Designed for homeowners, landlords, tenants, and smart home enthusiasts who need lowpower, longlasting presence detection to enhance security and automation. Key benefits Accurate motion and presence detection within meter ranges, suitable for detecting movement in rooms, entryways, and commercial spaces. Millimeterwave sensing improves detection of small or lowvisibility movements compared to simple PIR sensors. Battery powered with low energy consumption for extended operation and reduced maintenance. Durable ABS housing for longterm use and easy placement in a variety of indoor environments. Simple integration into existing smart home ecosystems and remote monitoring setups. Features Function: human presence and motion detection using millimeterwave sensing Power: battery powered, optimized for low power consumption Material: ABS durable housing Size: 7.2 x 3.8 cm (2.83 x 1.5 inch) Color: as pictured Typical use scenarios Home security: monitor entryways, hallways, and living areas to trigger alerts, cameras, or lighting when motion is detected. Office management: detect occupancy in meeting rooms or workspaces to automate lighting and energy management. Retail and monitoring: track realtime customer presence to assist staff deployment and operational decisions. What is included 1 pc Human Presence Sensor Notes Please allow 1 to 2 cm measurement variation due to manual measurement. Actual product color may vary slightly from the picture because of differences in monitor displays.