A USB-C powered 60-64 GHz mmWave radar presence sensor that detects stationary occupants across up to 10 zones, with a built-in illuminance sensor for lighting-aware automations. Multiprotocol Wi-Fi, Bluetooth, Zigbee, and Matter for flexible integration.
One mode at a time: the device serves one of these combinations, not all of them at once.
Entities in Home Assistant
47 entities via zigbee2mqtt
Primary entities 40 What automations and dashboards use.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| Occupancy 1 | binary_sensor | occupancy | — |
| Occupancy 10 | binary_sensor | occupancy | — |
| Occupancy 2 | binary_sensor | occupancy | — |
| Occupancy 3 | binary_sensor | occupancy | — |
| Occupancy 4 | binary_sensor | occupancy | — |
| Occupancy 5 | binary_sensor | occupancy | — |
| Occupancy 6 | binary_sensor | occupancy | — |
| Occupancy 7 | binary_sensor | occupancy | — |
| Occupancy 8 | binary_sensor | occupancy | — |
| Occupancy 9 | binary_sensor | occupancy | — |
| Bright threshold | number | — | lx |
| Dark threshold | number | — | lx |
| Detection: Maximum range | number | — | m |
| Detection: Minimum range | number | — | m |
| Detection: Tracked objects | number | — | — |
| Fine-tuning: Detection points | number | — | — |
| Fine-tuning: Maximum velocity difference | number | — | — |
| Fine-tuning: Motion activation threshold | number | — | — |
| Fine-tuning: Motion release threshold | number | — | — |
| Fine-tuning: SNR threshold | number | — | — |
| Fine-tuning: Stillness timeout threshold | number | — | — |
| Fine-tuning: Stillness tracking threshold | number | — | — |
| Fine-tuning: Tracking loss threshold | number | — | — |
| Fine-tuning: Velocity threshold | number | — | — |
| LEDs: Brightness | number | — | % |
| LEDs: Night mode brightness | number | — | % |
| Mounting: Installation height | number | — | m |
| Detection: Radar power | select | — | — |
| Detection: Sensitivity | select | — | — |
| Mounting: Sensor position | select | — | — |
| Light level | sensor | — | — |
| LEDs: Night mode | switch | — | — |
| Mounting: Sensor flipped | switch | — | — |
| Wi-Fi Configuration: Wi-Fi enabled | switch | — | — |
| Wi-Fi Configuration: DNS | text | — | — |
| Wi-Fi Configuration: Gateway | text | — | — |
| Wi-Fi Configuration: IPv4 address | text | — | — |
| Wi-Fi Configuration: Network | text | — | — |
| Wi-Fi Configuration: Network mask | text | — | — |
| Wi-Fi Configuration: Password | text | — | — |
Configuration 4 Settings exposed as entities, tunable from Home Assistant.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| Absence delay 1 | number | — | s |
| Presence delay 1 | number | — | s |
| Identify | select | — | — |
| Eco mode | switch | — | — |
Diagnostics 3 Health and troubleshooting values, hidden from dashboards by default.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| DHCP enabled | binary_sensor | — | — |
| IP address | sensor | — | — |
| Wi-Fi status | sensor | — | — |
From the zigbee2mqtt device database (zigbee-herdsman-converters
26.124.0):
the entities zigbee2mqtt creates for
S4SN-0U61X.
Paired through ZHA instead, the same hardware produces a different set.
Recipes using this device
Away Motion Camera Alert
Installs Home Assistant automations that watch for motion while the house is armed and send you a notification with the camera view attached. Add presence sensors to arm and disarm on their own, a siren to sound off, and lights to flash.
Motion Hallway Light
Installs a Home Assistant automation that turns a hallway or landing light on when motion is seen and off again once the space has been still for a grace period you set. Add a light sensor and it only runs after dark, add a presence sensor and it holds the light while someone lingers.
Presence Room Lighting
Installs a Home Assistant automation that keeps a room's lights on for as long as an mmWave presence sensor sees someone in it, and switches them off shortly after the room empties. Add a light sensor to run only after dark, and dimmable lights that come up softly.
Presence Thermostat Setback
Installs a Home Assistant automation that eases your thermostat into an energy-saving preset once everyone has left, and brings it back to a comfort preset the moment someone returns. Add extra occupancy sensors and any one of them counts as home.
Recipes that can use it
These recipes are built around other hardware, and pick this device up as an optional extra.
Circadian Adaptive Lighting
Installs a Home Assistant automation that walks the colour and brightness of your dimmable lights through the day, cool and bright around midday and warm and low in the evening. It only ever changes lights that are already on, so it never switches a light on by itself.
Door or Window Left Open Alert
Installs a Home Assistant automation that watches your door and window sensors and pushes a notification to your phone when one is left open past a grace period while nobody is home. Add lights and it flashes the room, add a speaker and it announces the warning out loud.
Shades by Sun and Heat
Installs a Home Assistant automation that closes your shades when the sun climbs high and the day is hot, and opens them again as the sun drops, using Home Assistant's own sun position. Add a light and temperature sensor to hold it to genuinely bright, hot afternoons.