# SONOFF SNZB-02UL

*SONOFF / SNZB-02UL*

> The SNZB-02UL (AirGuard E-Ink) needs a Zigbee 3.0 hub or coordinator. It has a 2.9 inch E-Ink screen that shows temperature and humidity, and also the time, date and weather once it is connected to a gateway. It suits HomeKit users through an integration (a Matter bridge). Google Home, Alexa and Home Assistant users reach it through an integration (Zigbee).

- Canonical page: https://smarthomecanon.com/devices/sonoff-snzb-02ul
- Last checked: 2026-10-13

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [SONOFF](https://smarthomecanon.com/brands/sonoff) |
| Category | Temperature and humidity sensor |
| Model numbers | SNZB-02UL |
| Status | Current[^1] |
| Type | Temperature and humidity[^1] |
| Power | 2 x AAA batteries[^1] |
| Radio | Zigbee (IEEE 802.15.4)[^1] |
| In Zigbee2MQTT docs | Yes[^2] |

## Integration paths

**How the SONOFF SNZB-02UL connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter via Bridge](https://smarthomecanon.com/protocols/matter-bridged) | A SONOFF Matter bridge, such as the Zigbee Bridge Ultra[^3] | unknown | unknown |
| [Zigbee](https://smarthomecanon.com/protocols/zigbee) | A Zigbee 3.0 hub or coordinator[^1] | unknown | unknown |

**Platform support for the SONOFF SNZB-02UL**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter via Bridge | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Via integration[^3] |  |
| Zigbee | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Via integration[^1] |  |
| Zigbee | [Google Home](https://smarthomecanon.com/platforms/google-home) | Via integration[^1] |  |
| Zigbee | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | Via integration[^1] | SONOFF Zigbee dongle |

## Related pages

- [SONOFF sensors and buttons](https://smarthomecanon.com/lines/sonoff-zigbee-sensors) (line)
- [SONOFF](https://smarthomecanon.com/brands/sonoff) (brand)
- [Matter through a bridge](https://smarthomecanon.com/protocols/matter-bridged) (protocol)
- [Zigbee](https://smarthomecanon.com/protocols/zigbee) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)

## Sources

[^1]: SONOFF store: SONOFF AirGuard Series E-Ink Zigbee Temperature Humidity Sensor | SNZB-02UL. https://sonoff.tech/products/sonoff-airguard-series-e-ink-zigbee-temperature-humidity-sensor-snzb-02ul (manufacturer, checked 2026-10-10)
[^2]: Zigbee2MQTT: SONOFF SNZB-02UL. https://www.zigbee2mqtt.io/devices/SNZB-02UL.html (platform documentation, checked 2026-10-10)
[^3]: SONOFF Zigbee Bridge Ultra. https://sonoff.tech/products/sonoff-zigbee-bridge-ultra (manufacturer, checked 2026-10-13)