Sonoff
Sonoff SNZB-02D Temperature & Humidity Sensor with Display
- Zigbee2MQTT / ZHA
- Local control
- Zigbee
Prices verified September 2026
See more sensors picks on our Amazon storefront →Our verdict
The best-value climate sensor with a screen: a 2.5-inch LCD shows temperature, humidity and a comfort icon at a glance, so you don't need to open the Home Assistant app to check a room. It's noticeably bulkier than the display-less -02P (62.5x59.5x18.5mm vs a slim 45x45x17.7mm) and its CR2450 lasts roughly half as long — around 2 years against the -02P's 4 — the tradeoff for having a screen at all. Buy this one for a single desk, nursery or bedroom where you want a physical readout; for whole-house sensor coverage, the cheaper, smaller -02P scatters better across multiple rooms. Magnetic base and desk-stand mounting both included.
What can Home Assistant control on the Sonoff SNZB-02D Temperature & Humidity Sensor with Display?
| Control | Type | What it does |
|---|---|---|
| Temperature | Sensor (°C) | Room temperature reading |
| Humidity | Sensor (%) | Room humidity reading |
| Comfort thresholds | Number (x4, Zigbee2MQTT only) | Set the on-device comfort-icon min/max ranges |
| Battery | Sensor (%) | Battery level |
Zigbee2MQTT exposes the expected temperature/humidity/battery trio plus on-device comfort-zone thresholds and calibration offsets that ZHA doesn't surface at all. The catch: the sensor sleeps to save its CR2450, so any settings change (calibration, comfort range, °C/°F) silently queues until you physically press the rear button to wake it — a write made while it's asleep just doesn't land. Worth mirroring the same comfort min/max values in an HA automation so phone alerts only fire when the physical display's snowflake/fire icon is also showing it, avoiding duplicate thresholds drifting out of sync.
Specs
| power | CR2450, up to 2 years |
|---|---|
| display | 2.5-inch LCD (temperature, humidity, comfort icon, battery level) |
| accuracy | ±0.2°C / ±2% RH |
| mounting | Magnetic base or integrated desk stand |
| dimensions | 59.5 x 62.5 x 18.5mm |
| sensor type | Temperature and humidity |
| operating temp | -9.9°C to 60°C |
| report interval | Instant on ≥0.2°C/5% RH change, otherwise about every 30 min |
How does the Sonoff SNZB-02D Temperature & Humidity Sensor with Display compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Sonoff SNZB-02D Temperature & Humidity Sensor with Display (this product) | £14.79 | 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-02D Temperature & Humidity Sensor with Display work with Home Assistant locally?
- Yes. The Sonoff SNZB-02D Temperature & Humidity Sensor with Display 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-02D Temperature & Humidity Sensor with Display use, and do I need a hub?
- The Sonoff SNZB-02D Temperature & Humidity Sensor with Display 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-02D Temperature & Humidity Sensor with Display cost in the UK?
- The lowest price we have listed for the Sonoff SNZB-02D Temperature & Humidity Sensor with Display is £14.79 at Amazon UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.