Sonoff
Sonoff SNZB-03P Zigbee Motion Sensor
- Zigbee2MQTT / ZHA
- Local control
- Zigbee
Prices verified September 2026
See more sensors picks on our Amazon storefront →Our verdict
The budget motion pick if you already run a Zigbee coordinator: sub-£15, fast 5-second re-trigger and a built-in lux sensor, with solid Zigbee2MQTT and ZHA support. Ignore the 'Sonoff bridge required' marketing — it pairs straight to any Zigbee 3.0 dongle. Rated 6m range and a 110° field of view, which is narrower than premium PIR sensors like Aqara's, so it suits hallways and doorways better than covering a whole living room from one corner. The CR2477 coin cell claims roughly 3 years, decent for a device this cheap. Mount it where the cone catches the room's main approach path rather than a side wall.
What can Home Assistant control on the Sonoff SNZB-03P Zigbee Motion Sensor?
| Control | Type | What it does |
|---|---|---|
| Motion | Binary sensor | Occupied/clear state |
| Illuminance | Sensor (lux) | Ambient light level |
| Motion timeout | Number (5-60s) | How long occupancy stays "on" after the last detection |
| Battery | Sensor (%) | Battery level |
The lux sensor is actually a two-state enum (dim/bright), not a numeric lux reading, and it only updates when motion fires rather than continuously — so a naive "turn on light if dark" automation can defeat itself: the light turning on gets read back as bright on the next motion event, blocking retriggering until several more cycles pass. Use illuminance as a gate condition (only run the lighting automation when it reads dim) rather than as a live threshold trigger, which sidesteps that feedback loop entirely.
Specs
| Weight | 54g |
|---|---|
| Dimensions | 44 x 44 x 65mm |
| Battery life | ~3 years |
| Battery type | CR2477 (3V) |
| Detection angle | 110° |
| Detection range | 6m |
| Operating humidity | 5-95% RH, non-condensing |
| Operating temperature | -10°C to 60°C |
How does the Sonoff SNZB-03P Zigbee Motion Sensor compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Sonoff SNZB-03P Zigbee Motion Sensor (this product) | £14.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Door and Window Sensor P2 | £23.99 | Matter, Thread | Yes | Works with HA |
| Aqara Motion Sensor P1 | £18.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Multi-State Sensor P100 | £25.49 | Zigbee, Thread, Matter | Yes | Zigbee2MQTT / ZHA |
Frequently asked questions
- Does the Sonoff SNZB-03P Zigbee Motion Sensor work with Home Assistant locally?
- Yes. The Sonoff SNZB-03P Zigbee Motion Sensor is controlled locally in Home Assistant through Zigbee2MQTT or ZHA, so it keeps working if your internet connection or the Sonoff cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Sonoff SNZB-03P Zigbee Motion Sensor use, and do I need a hub?
- The Sonoff SNZB-03P Zigbee Motion Sensor uses Zigbee. To pair it with Home Assistant you need a Zigbee coordinator (for example a SkyConnect/ZBT-1 or Sonoff dongle) attached to your Home Assistant host. Sonoff's own hub is not required when you integrate through Zigbee2MQTT or ZHA.
- How much does the Sonoff SNZB-03P Zigbee Motion Sensor cost in the UK?
- The lowest price we have listed for the Sonoff SNZB-03P Zigbee Motion Sensor is £14.99 at Amazon UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.