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SONOFF SNZB-02B

SONOFF / SNZB-02B

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Does the SONOFF SNZB-02B work with HomeKit, Alexa, and Google Home?

The SNZB-02B (AirGuard TH Lite) needs a Zigbee 3.0 hub or coordinator.

It is a small temperature and humidity sensor on two AAA batteries that also works out dew point and VPD in the app. It suits HomeKit users through an integration (a Matter bridge). Home Assistant users reach it through an integration (Zigbee).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Yes[1]
Matter via Bridge, via integration
Google Home
Unknown
Unknown
Alexa
Unknown
Unknown
SmartThings
Unknown
Unknown
Home Assistant
Yes[2]
Zigbee, via ZHA (needs a script)

Key facts

SONOFF SNZB-02B facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[2]
List price$9.90[2] as of
TypeTemperature and humidity[2]
Power2 x AAA batteries[2]
RadioZigbee 3.0[2]
In Zigbee2MQTT docsYes[3]

Integration paths

How the SONOFF SNZB-02B connects

2 pathsHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Matter via BridgeA SONOFF Matter bridge, such as the Zigbee Bridge Ultra[1]unknownunknown
ZigbeeHUBA Zigbee 3.0 hub or coordinator[2]unknownunknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the SONOFF SNZB-02B

1 routeHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantVia Zigbee/Z-Wave[3]zigbee2mqttZigbee
  • Works with Home Assistant: Not certified[3]
Model namedNone stated
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Cite this page

SONOFF SNZB-02B. Smart Home Canon. https://smarthomecanon.com/devices/sonoff-snzb-02b. Last checked 2026-10-13.

Sources

  1. [1]
    MFRsonoff.tech / SONOFF Zigbee Bridge Ultra
    Accessed Back to text
  2. [2]
    MFRsonoff.tech / SONOFF store: SONOFF AirGuard TH Lite Zigbee Temperature Humidity Sensor | SNZB-02B
    Accessed Back to text
  3. [3]
    DOCzigbee2mqtt.io / Zigbee2MQTT: SONOFF SNZB-02B
    Accessed Back to text