Product overview This WiFi human presence sensor uses mmWave radar detection to reliably identify people and motion in a room. It supports multiple detection modes and an onboard illuminance monitor for automatic scene linkage with other smart devices. The unit is compact and lightweight for flexible mounting and simple installation. Key benefits Detects presence accurately: Recognizes moving people, stationary occupants, micro movements, and mini motion events to improve automation reliability. Automates lighting and scenes: Builtin illuminance monitoring enables automatic control of lights and other smart devices based on ambient brightness. Flexible installation and power: Install on the ceiling like a downlight with direct AC power, or mount on a wall and power via USB 5V. The sensor is compact and as light as a typical wireless hub. Easy integration: Works over WiFi and supports scene linkage with other smart home devices, enabling broader automation scenarios. Main features Detection modes: Human presence, human static, human mini motion, and human movement motion detection using mmWave radar for sensitive and precise performance. Illuminance monitor: Measures ambient light and exposes data to the app for automatic scene triggers, such as turning house lights on or off as brightness changes. Mounting options: Ceiling mount designed for downlightstyle installation; wall mount that attaches where needed for coverage. Power options: Ceiling mount can be powered directly from AC; wall mount runs on USB 5V for easy installation without major wiring. Connectivity and control: WiFi connection for remote control and automation. Compatible with Tuya Smart APP for scene configuration and device linkage. Practical applications Bedroom motion and presence detection: Detects both movement and static presence to automate lights, climate control, or notifications while minimizing false triggers. Living room or hallway lighting automation: Use the illuminance monitor and presence detection to turn lights on when a person enters and off when the room becomes empty or bright enough. Office or meeting room management: Track occupancy and link to HVAC, lighting, or scheduling systems to reduce manual intervention and support efficient space use. Technical notes Detection technology: mmWave radar for fine motion and presence sensing. Power: Ceiling installation supports direct AC power. Wall installation uses USB 5V. Mounting: Ceilingdownlight style or wall mountable. App compatibility: Illuminance and presence data are available in the Tuya Smart APP for scene linkage and automation with other smart devices. This sensor provides precise occupancy detection, ambient light monitoring, and flexible mounting and power options to simplify automation and improve the responsiveness of connected devices.