Shelly Presence Gen4 White Presence Sensor

Shelly Presence Gen4 is a room presence sensor that uses mmWave radar to detect people, including occupants who remain still. It is designed for room-aware automation where a conventional motion trigger may not provide enough information. Shelly documents Wi-Fi 6, Bluetooth 5 LE and Zigbee 3.0 connectivity, with Matter-over-Wi-Fi support. The sensor can track up to six people and supports up to ten configurable detection zones, allowing automations to respond to activity in a chosen area. A built-in light sensor reports ambient conditions as dark, twilight or bright. The device is powered through USB-C at 5 V and can be placed on a shelf or table or mounted on a wall. Configure sensitivity and zones for the room before relying on automated lighting or climate actions, and use a stable power adapter as recommended by Shelly.