Sonoff
Sonoff SNZB-02P Zigbee Temperature & Humidity Sensor
- Zigbee2MQTT / ZHA
- Local control
- Zigbee
Prices verified September 2026
See more sensors picks on our Amazon storefront →Our verdict
The no-display sibling of the SNZB-02D and the cheapest accurate room sensor worth buying: ±0.2°C Swiss-grade sensor, a CR2477 that genuinely lasts years, and first-class Zigbee2MQTT/ZHA support — no Sonoff bridge needed despite the marketing. At 45×45×17.7mm it's small enough to tuck on a shelf or wall in every room without becoming a fixture, unlike the -02D's chunky 2.5-inch display unit. It reports within 5 seconds of any change and at least hourly otherwise, so Home Assistant automations react fast. Buy the -02D only if you want one glanceable reading on a desk; for whole-house heating zoning, scatter several of these instead.
What can Home Assistant control on the Sonoff SNZB-02P Zigbee Temperature & Humidity Sensor?
| Control | Type | What it does |
|---|---|---|
| Temperature | Sensor (°C) | Room temperature reading |
| Humidity | Sensor (%) | Room humidity reading |
| Calibration | Number (x2) | Offset the temperature/humidity readings |
| Battery | Sensor (%) | Battery level |
There's no voltage sensor exposed on this model (unlike some Zigbee sensors), just temperature, humidity, battery percentage, plus writable calibration/precision config entities. Because it has no display to glance at (unlike its -02D sibling), pair it with a "sensor silence" automation that alerts if no update has arrived in over 2 hours — the only practical way to catch a dying CR2477 or a dropped rejoin before you'd otherwise notice. Post-pairing calibration edits have also been reported to fail outright on some Zigbee2MQTT versions, so verify a change actually applied.
Specs
| power | CR2477, up to 4 years |
|---|---|
| accuracy | ±0.2°C / ±2% RH |
| mounting | Magnetic base or adhesive |
| dimensions | 45 x 45 x 17.7mm |
| sensor type | Temperature and humidity |
| operating temp | -10°C to 60°C |
| report interval | On change (min. 5s) or at least every 60 min if unchanged |
How does the Sonoff SNZB-02P Zigbee Temperature & Humidity Sensor compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Sonoff SNZB-02P Zigbee Temperature & Humidity Sensor (this product) | £12.6 | 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-02P Zigbee Temperature & Humidity Sensor work with Home Assistant locally?
- Yes. The Sonoff SNZB-02P Zigbee Temperature & Humidity 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-02P Zigbee Temperature & Humidity Sensor use, and do I need a hub?
- The Sonoff SNZB-02P Zigbee Temperature & Humidity 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-02P Zigbee Temperature & Humidity Sensor cost in the UK?
- The lowest price we have listed for the Sonoff SNZB-02P Zigbee Temperature & Humidity Sensor is £12.60 at Amazon UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.