Sonoff SenseGuard Presence Core

The radar answers occupied or not occupied. SONOFF never claims people counting, and Zigbee2MQTT exposes a single occupancy binary rather than per-target data.

SONOFF's detection-range section states a 120° detection angle, matching the figure in SmartHomeScene's hands-on. The highlights blurb on the same help center page says 110°, which is the angle of the older SNZB-06P.

Radial detection distance of about 4 meters, split into seven independent zones of 0.5m that can each be switched off in the app to mask a doorway or a desk fan.

Presence and the lux reading can both trigger eWeLink scenes, which is how SONOFF pitches it for lighting that only turns on when the room is dark and occupied.

SONOFF states the device can act as a Zigbee router and extend the coverage of the mesh, which its permanent USB-C power allows.

eWeLink keeps occupancy detection logs and a record of the light level over time, which SONOFF also allows exporting.

SONOFF states the device cannot accurately detect a sleeping person, because the chest movement of breathing during sleep is too subtle for it.

24GHz mmWave radar that reads micro-movements such as the chest expansion of breathing, so it holds detection on someone sitting still. SONOFF notes a completely motionless person is best detected within 3 meters facing the device, and that it cannot reliably detect a sleeping person.

Ambient light sensor reporting a lux value, with a calibration offset and a history log. Zigbee2MQTT exposes illuminance and the illuminance calibration.

Presence and absence events drive scenes and notifications, with a configurable occupancy timeout before the room is reported empty.

Bluetooth LE is used by the eWeLink BLE Setup flow to add the device and to configure the detection zones and Detection Calibration locally, which is how third-party platform users reach those settings. All reporting still happens over Zigbee.

Zigbee 3.0 (IEEE 802.15.4) end device with an open-area range of 100m. It needs a Zigbee coordinator: a SONOFF gateway, or any Zigbee 3.0 hub such as a Zigbee2MQTT or ZHA dongle.

SONOFF lists Google Home among the third-party platforms that can query the occupancy status, once the sensor is added to eWeLink through a SONOFF Zigbee gateway and synced cloud to cloud.

SONOFF lists Alexa among the third-party platforms that can query the motion status, through the eWeLink cloud-to-cloud integration behind a SONOFF Zigbee gateway.

The sensor has no HomeKit profile of its own. SONOFF documents Apple Home support through its own Matter bridges (ZBBridge-U, iHost, eWeLink CUBE), which republish the Zigbee device into the Apple ecosystem.

SONOFF publishes a SmartThings driver for the model and links the channel invite from its help center page; the device then reports occupancy in SmartThings.

Zigbee2MQTT supports the exact model and exposes occupancy, illuminance, the occupancy timeout, radar sensitivity, the seven detection zones and the spatial learning calibration. SONOFF also documents ZHA, which currently needs a quirk script it provides.

The device is Zigbee, not Matter. SONOFF's own Matter bridges (ZBBridge-U, iHost, eWeLink CUBE) are what expose it to a Matter fabric.

Permanently powered over a USB-C port rated 5V 0.5A. There is no battery option, so the sensor has to stay plugged in.