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This is a Zigbee mmWave radar presence sensor that detects people who are still, not just people who move, so lights and scenes stay on while someone sits at a desk or couch. It reports presence distance, detection distance, sensitivity and illuminance over Zigbee, and it works best with Home Assistant through Zigbee2mqtt rather than ZHA. It needs a Tuya Zigbee hub and USB power, so it is a wired, always-on device rather than a battery sensor. Compared with common PIR motion sensors, it responds faster and avoids the lights-off-while-you-sit problem, but it costs more and needs mains-adjacent USB power and a Zigbee network.
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Owners of this class of 24 GHz Zigbee presence sensor praise the still-presence detection and fast response in Home Assistant, and note that tuning sensitivity and detection distance takes some trial. Complaints center on the hub requirement, the wired power, and setup friction outside Zigbee2mqtt.
This is a Zigbee presence sensor that uses 24G millimeter wave radar. Unlike a PIR motion sensor, it detects people who are still as well as people who are moving. The 24G radar responds faster and measures distance more accurately than a 5.8G radar.
The sensor is wired and needs constant power from a USB 5V 1A supply. It can be mounted on a wall or ceiling. It works with a Tuya Zigbee hub (gateway) and can also be used with Home Assistant through Zigbee2mqtt.
With Zigbee2mqtt, Home Assistant gets presence distance, illuminance (lux), detection distance and presence sensitivity. Zigbee2mqtt is recommended over ZHA for access to all functions. The sensor can also trigger scenes, such as turning on a smart light when someone comes home or wakes up at night. It can be placed in an entryway, living room or similar spaces.
