Device profile · Specifications & compatibility
Sonoff SNZB-02B AirGuard TH Lite
Sonoff · Temperature & Humidity Sensors · Model SNZB-02B
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- Sonoff SNZB-02B AirGuard TH Lite lists Temperature Alerts; Humidity; Home Assistant.
- Check configurable thresholds, notification routes and any hub requirement.
Browse more from Sonoff or explore all temperature & humidity sensors in our catalog.
- Recorded year
- 2026
- Recorded warranty
- 2 years
- Dimensions
- 66.3 x 27.8 x 20 mm
- Weight
- 43g
The details that shape your choice
Sonoff SNZB-02B AirGuard TH Lite Quick Features
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From specification to decision
Sonoff SNZB-02B AirGuard TH Lite: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
Temperature alerts are recorded as an automation or notification option. Check configurable thresholds, notification routes and any hub requirement. A custom comfort range pushes a phone notification when the reading leaves the band.
View Temperature Alerts details →A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities. Zigbee2MQTT documents the model and exposes temperature, humidity, dew point, VPD and battery. ZHA also works, with the script SONOFF publishes in its help center.
View Home Assistant details →Low-battery alerts are recorded, providing a maintenance notification to verify in the chosen platform. Check the alert destination and how disconnected-device status is handled. SONOFF lists a low battery warning among the functions its compatible platforms expose for this model.
View Low Battery Alerts details →
What to consider
A screen is listed as unavailable; check how information is accessed instead. The sensor has no display of its own: readings, dew point and VPD are shown in the eWeLink app.
View Screen details →
Still needs verification
Confirm these details if they matter to your setup.
Questions About Sonoff SNZB-02B AirGuard TH Lite
Does Sonoff SNZB-02B AirGuard TH Lite provide temperature alerts?
Yes, according to the listed specifications. Check configurable thresholds, notification routes and any hub requirement. A custom comfort range pushes a phone notification when the reading leaves the band.
View Temperature Alerts specifications →What is the humidity-sensing capability of Sonoff SNZB-02B AirGuard TH Lite?
Humidity sensing is provided. Check the specified variant, required hub and installation instructions. Manufacturer claims are not independent performance tests. Check the stated range and accuracy, then verify access to the reading in your platform.
Source: Sonoff SNZB-02B AirGuard TH Lite — manufacturer product description · Checked 2026-10-04
View Humidity specifications →Does Sonoff SNZB-02B AirGuard TH Lite include a screen?
No, according to the listed specifications. Check which readings or controls are available on the device without opening an app. The sensor has no display of its own: readings, dew point and VPD are shown in the eWeLink app.
View Screen specifications →Does Sonoff SNZB-02B AirGuard TH Lite support Matter?
Matter is listed as “SONOFF Hub required”. The stated condition applies to this feature. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity. Not a Matter device itself: SONOFF bridges it into Matter through the ZBBridge-U and eWeLink CUBE.
View Matter specifications →Does Sonoff SNZB-02B AirGuard TH Lite work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities. Zigbee2MQTT documents the model and exposes temperature, humidity, dew point, VPD and battery. ZHA also works, with the script SONOFF publishes in its help center.
View Home Assistant specifications →Explore the full picture
Sonoff SNZB-02B AirGuard TH Lite Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
3 of 35 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Alerts4 fields
| Temperature Alerts | YesDetails & conditionsA custom comfort range pushes a phone notification when the reading leaves the band. |
|---|---|
| Humidity Alerts | Yes |
| Air Quality Alerts | No |
| Low Battery Alerts | YesDetails & conditionsSONOFF lists a low battery warning among the functions its compatible platforms expose for this model. |
Sensors5 fields
| Temperature | YesManufacturer sourceTemperature sensing is provided. Sonoff SNZB-02B AirGuard TH Lite — manufacturer product description →
Check the specified variant, required hub and installation instructions. Manufacturer claims are not independent performance tests. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsSwiss Sensirion sensor, accuracy of ±0.2°C (±0.4°F), refreshed every 5 seconds. |
|---|---|
| Humidity | YesManufacturer sourceHumidity sensing is provided. Sonoff SNZB-02B AirGuard TH Lite — manufacturer product description →
Check the specified variant, required hub and installation instructions. Manufacturer claims are not independent performance tests. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsAccuracy of ±2% RH, with dew point and VPD calculated from the temperature and humidity readings. |
| Atmospheric Pressure | No |
| Air Quality | No |
| Occupancy | No |
Display9 fields
| Screen | NoDetails & conditionsThe sensor has no display of its own: readings, dew point and VPD are shown in the eWeLink app. |
|---|---|
| Screen Type | Not applicable / unspecified |
| Color Screen | Not applicable / unspecified |
| Touch Screen | Not applicable / unspecified |
| Screen Size | Not applicable / unspecified |
| Screen Resolution | Not applicable / unspecified |
| Weather Forecast | Not applicable / unspecified |
| Time | Not applicable / unspecified |
| Date | Not applicable / unspecified |
Connectivity7 fields
| 2.4 GHz Wi-Fi | No |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | No |
| Z Wave | No |
| Zigbee | Zigbee Hub requiredDetails & conditionsZigbee 3.0 (IEEE 802.15.4) end device. SONOFF lists the ZBBridge-P, ZBBridge-U, NSPanel Pro and iHost as its own gateways, plus the Aeotec SmartThings Hub V3 and the Zigbee Echo models. |
| Thread | No |
| Other | No |
Features2 fields
| Automations | YesDetails & conditionsSmart scenes trigger above or below a temperature or humidity threshold, or when the device goes offline, with a delay that avoids false alarms. The sensor is a trigger only, never an action. |
|---|---|
| History Records | YesDetails & conditionsSix months of free cloud history for temperature, humidity, dew point and VPD, with trend curves and data export. |
Integrations6 fields
| Google Home | YesDetails & conditionsSONOFF states the sensor answers Alexa and Google voice queries for temperature and humidity, through the eWeLink cloud-to-cloud link rather than a direct gateway connection. |
|---|---|
| Alexa | YesDetails & conditionsSONOFF lists the Zigbee Echo models (Echo Plus 2nd, Echo 4th Gen, Echo Show 2nd Gen) as compatible hubs, with temperature and humidity display and threshold alerts. |
| Apple Home | SONOFF Hub requiredDetails & conditionsThe sensor is Zigbee, not HomeKit. SONOFF reaches the Apple Home app by republishing it over Matter from its own bridges (ZBBridge-U, eWeLink CUBE). |
| SmartThings | YesDetails & conditionsSONOFF names the Aeotec SmartThings Hub V3 as a compatible Zigbee gateway, with temperature, humidity and battery level available on SmartThings. |
| Home Assistant | YesDetails & conditionsZigbee2MQTT documents the model and exposes temperature, humidity, dew point, VPD and battery. ZHA also works, with the script SONOFF publishes in its help center. |
| Matter | SONOFF Hub requiredDetails & conditionsNot a Matter device itself: SONOFF bridges it into Matter through the ZBBridge-U and eWeLink CUBE. |
Power2 fields
| Battery Type | 2x AAAManufacturer sourceThe sensor uses two AAA batteries. Sonoff SNZB-02B AirGuard TH Lite — manufacturer product description →
Check the specified variant, required hub and installation instructions. Manufacturer claims are not independent performance tests. Document check only; not a hands-on test or verification of every regional or firmware variant. |
|---|---|
| Battery Life | 2 years |
How this device compares
Sonoff SNZB-02B AirGuard TH Lite vs Other Similar Models
Statistical context from 36 temperature & humidity sensors in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
Automations: 28 of 34 known answers are Yes
Features: 82% among explicit Yes/No answers; 2 of 36 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Humidity: 30 of 36 known answers are Yes
Sensors: 83% among explicit Yes/No answers; 0 of 36 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
History Records: 23 of 25 known answers are Yes
Features: 92% among explicit Yes/No answers; 11 of 36 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
8 of 36 models are from Sonoff
Counts temperature & humidity sensors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Sonoff SNZB-02B AirGuard TH Lite vs Similar Temperature & Humidity Sensors
See how Sonoff SNZB-02B AirGuard TH Lite stacks up against other temperature & humidity sensors in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.