The Smart Device Compare comparison

Sonoff SNZB-02DR2 AirGuard TH vs YoLink Smart Wireless Thermometer Hygrometer

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Sonoff SNZB-02DR2 AirGuard TH and YoLink Smart Wireless Thermometer Hygrometer

A summary of selected recorded differences between these temperature & humidity sensors. Check the full specification table below for details and conditions.

Feature differences among your selected devices

Bluetooth (connectivity): Sonoff SNZB-02DR2 AirGuard TH — Yes (Proximity Mode pairs the sensor straight to a phone over Bluetooth in the eWeLink app, with live readings, history and Bluetooth OTA updates, and no gateway involved); YoLink Smart Wireless Thermometer Hygrometer — No.
Other (connectivity): Sonoff SNZB-02DR2 AirGuard TH — No; YoLink Smart Wireless Thermometer Hygrometer — Yes (LoRa, up to 1/4 mile range (YoLink hub required)).
Screen (display): Sonoff SNZB-02DR2 AirGuard TH — Yes; YoLink Smart Wireless Thermometer Hygrometer — No.

Specifications to check side by side

Zigbee (connectivity): Sonoff SNZB-02DR2 AirGuard TH — Zigbee Hub required (Zigbee 3.0 end device on IEEE 802.15.4. The full feature set (remote access, scenes, alerts, remote temperature display) needs a gateway such as the ZBBridge-P, ZBBridge-U, NSPanel Pro or iHost, or a ZBDongle running Zigbee2MQTT or ZHA); YoLink Smart Wireless Thermometer Hygrometer — No.
Apple Home (integrations): Sonoff SNZB-02DR2 AirGuard TH — SONOFF Hub required (The device is Zigbee, not HomeKit. SONOFF republishes it into the Apple Home app through its own Matter bridges (ZBBridge-U, eWeLink CUBE)); YoLink Smart Wireless Thermometer Hygrometer — YoLink Local Hub required (The YoLink Local Hub bridges YoLink devices to Matter, which is how they reach the Apple Home app. The older cloud-only YoLink hubs have no Apple Home path.).
Matter (integrations): Sonoff SNZB-02DR2 AirGuard TH — SONOFF Hub required (Not a Matter device itself: SONOFF bridges it into Matter through the ZBBridge-U and eWeLink CUBE); YoLink Smart Wireless Thermometer Hygrometer — YoLink Local Hub required.
SmartThings (integrations): Sonoff SNZB-02DR2 AirGuard TH — Yes (SONOFF lists the Aeotec SmartThings Hub V3 as a compatible Zigbee gateway, with temperature and humidity voice queries on SmartThings); YoLink Smart Wireless Thermometer Hygrometer — YoLink Local Hub required (Via Matter).

Information still to confirm

10 of 35 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · Sonoff

Sonoff SNZB-02DR2 AirGuard TH

Last updated October 2026

View full device profile

Option 2 · YoLink

YoLink Smart Wireless Thermometer Hygrometer

Last updated October 2026

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

8differences with recorded values for every device

10rows with missing or unspecified information

Consider your setup

Apple Home

Sonoff SNZB-02DR2 AirGuard THSONOFF Hub required
YoLink Smart Wireless Thermometer HygrometerYoLink Local Hub required

Confirm which features appear in Apple Home and whether extra hardware or a subscription is needed for your intended use.

Inspect the specifications

Consider your setup

Matter

Sonoff SNZB-02DR2 AirGuard THSONOFF Hub required
YoLink Smart Wireless Thermometer HygrometerYoLink Local Hub required

Confirm the exact device type and the features exposed in your chosen platform. Protocol support does not establish feature parity across apps.

Inspect the specifications

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

Differences onlyMy priorities (0)

Showing 35 of 35 rows. “Not recorded” does not mean “No”.

Reading layout

Alerts

Air Quality Alerts

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Humidity Alerts

Sonoff SNZB-02DR2 AirGuard TH: Yes
YoLink Smart Wireless Thermometer Hygrometer: Yes

Low Battery Alerts

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
SONOFF lists a low battery warning on eWeLink, Home Assistant and Alexa
YoLink Smart Wireless Thermometer Hygrometer: Yes
Catalog note
Real-time low battery alerts in the YoLink app

Temperature Alerts

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
Comfort range thresholds push a notification from the eWeLink app when the reading leaves the band
YoLink Smart Wireless Thermometer Hygrometer: Yes
Catalog note
App, email and text/SMS alerts

Connectivity

2.4 GHz Wi-Fi

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

5 GHz Wi-Fi

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Bluetooth

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
Proximity Mode pairs the sensor straight to a phone over Bluetooth in the eWeLink app, with live readings, history and Bluetooth OTA updates, and no gateway involved
YoLink Smart Wireless Thermometer Hygrometer: No

Other

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: Yes
Catalog note
LoRa, up to 1/4 mile range (YoLink hub required)

Thread

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Z Wave

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Zigbee

Sonoff SNZB-02DR2 AirGuard TH: Zigbee Hub required
Catalog note
Zigbee 3.0 end device on IEEE 802.15.4. The full feature set (remote access, scenes, alerts, remote temperature display) needs a gateway such as the ZBBridge-P, ZBBridge-U, NSPanel Pro or iHost, or a ZBDongle running Zigbee2MQTT or ZHA
YoLink Smart Wireless Thermometer Hygrometer: No

Display

Color Screen

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Date

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Screen

Sonoff SNZB-02DR2 AirGuard TH: Yes
YoLink Smart Wireless Thermometer Hygrometer: No

Screen Resolution

Sonoff SNZB-02DR2 AirGuard TH: Not recorded
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Screen Size

Sonoff SNZB-02DR2 AirGuard TH

3.6"

Manufacturer source

The LCD measures 3.6 inches.

Sonoff SNZB-02DR2 AirGuard TH manufacturer product page →

Source section: Product description
Model: Sonoff SNZB-02DR2 AirGuard TH
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Remote sensor readings require compatible devices on the same SONOFF gateway.

Document check only; not a hands-on test or verification of every regional or firmware variant.

YoLink Smart Wireless Thermometer Hygrometer

Not applicable / unspecified

Screen Type

Sonoff SNZB-02DR2 AirGuard TH

LCD

Manufacturer source

The device uses an LCD.

Sonoff SNZB-02DR2 AirGuard TH manufacturer product page →

Source section: Product description
Model: Sonoff SNZB-02DR2 AirGuard TH
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Remote sensor readings require compatible devices on the same SONOFF gateway.

Document check only; not a hands-on test or verification of every regional or firmware variant.

YoLink Smart Wireless Thermometer Hygrometer

Not applicable / unspecified

Time

Sonoff SNZB-02DR2 AirGuard TH: No
Catalog note
The screen layout published by SONOFF carries signal, battery, current and 24-hour max/min temperature and humidity, plus the remote sensor readings, and no clock
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Touch Screen

Sonoff SNZB-02DR2 AirGuard TH: No
Catalog note
A single physical button on the back handles wake-up, the temperature unit and pairing
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Weather Forecast

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: Not applicable / unspecified

Features

Automations

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
Smart scenes trigger above or below a temperature or humidity threshold, or when the device goes offline, with a false alarm delay. The sensor is a trigger only, never an action
YoLink Smart Wireless Thermometer Hygrometer: Yes

History Records

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
Six months of records with average, max and min curves by day, week, month and half year, plus calculated dew point and VPD, and CSV export
YoLink Smart Wireless Thermometer Hygrometer: Yes

Integrations

Alexa

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
SONOFF lists Alexa temperature voice queries, and an Echo with a built-in Zigbee hub (Echo Plus 2nd, Echo 4th, Echo Show 2nd) is named as a compatible gateway
YoLink Smart Wireless Thermometer Hygrometer: Yes

Apple Home

Sonoff SNZB-02DR2 AirGuard TH: SONOFF Hub required
Catalog note
The device is Zigbee, not HomeKit. SONOFF republishes it into the Apple Home app through its own Matter bridges (ZBBridge-U, eWeLink CUBE)
YoLink Smart Wireless Thermometer Hygrometer: YoLink Local Hub required
Catalog note
The YoLink Local Hub bridges YoLink devices to Matter, which is how they reach the Apple Home app. The older cloud-only YoLink hubs have no Apple Home path.

Google Home

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
SONOFF lists Google Home voice queries for both temperature and humidity
YoLink Smart Wireless Thermometer Hygrometer: Not recorded

Home Assistant

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
Supported by Zigbee2MQTT, and by ZHA with the script SONOFF publishes in its help center
YoLink Smart Wireless Thermometer Hygrometer: Yes

Matter

Sonoff SNZB-02DR2 AirGuard TH: SONOFF Hub required
Catalog note
Not a Matter device itself: SONOFF bridges it into Matter through the ZBBridge-U and eWeLink CUBE
YoLink Smart Wireless Thermometer Hygrometer: YoLink Local Hub required

SmartThings

Sonoff SNZB-02DR2 AirGuard TH: Yes
Catalog note
SONOFF lists the Aeotec SmartThings Hub V3 as a compatible Zigbee gateway, with temperature and humidity voice queries on SmartThings
YoLink Smart Wireless Thermometer Hygrometer: YoLink Local Hub required
Catalog note
Via Matter

Power

Battery Life

Sonoff SNZB-02DR2 AirGuard TH: Not recorded
YoLink Smart Wireless Thermometer Hygrometer: 5 years

Battery Type

Sonoff SNZB-02DR2 AirGuard TH: 2x AAA
YoLink Smart Wireless Thermometer Hygrometer: 2x AA

Sensors

Air Quality

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Atmospheric Pressure

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Humidity

Sonoff SNZB-02DR2 AirGuard TH

Yes

Manufacturer source

The sensor measures relative humidity.

Sonoff SNZB-02DR2 AirGuard TH manufacturer product page →

Source section: Product description
Model: Sonoff SNZB-02DR2 AirGuard TH
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Accuracy 2% RH over 0 to 100% RH, resolution 1% RH on the screen and 0.1% in the app

YoLink Smart Wireless Thermometer Hygrometer

Yes

Occupancy

Sonoff SNZB-02DR2 AirGuard TH: No
YoLink Smart Wireless Thermometer Hygrometer: No

Temperature

Sonoff SNZB-02DR2 AirGuard TH

Yes

Manufacturer source

The sensor measures air temperature.

Sonoff SNZB-02DR2 AirGuard TH manufacturer product page →

Source section: Product description
Model: Sonoff SNZB-02DR2 AirGuard TH
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Sensirion sensor, accuracy 0.2 C over the -20 to 60 C range, resolution 0.1 C

YoLink Smart Wireless Thermometer Hygrometer

Yes

Catalog note

Wide temperature range

Specifications for Sonoff SNZB-02DR2 AirGuard TH versus YoLink Smart Wireless Thermometer Hygrometer
Specification	Sonoff SNZB-02DR2 AirGuard TH	YoLink Smart Wireless Thermometer Hygrometer
Alerts
Air Quality Alerts	No	No
Humidity Alerts	Yes	Yes
Low Battery Alerts	Yes Catalog note SONOFF lists a low battery warning on eWeLink, Home Assistant and Alexa	Yes Catalog note Real-time low battery alerts in the YoLink app
Temperature Alerts	Yes Catalog note Comfort range thresholds push a notification from the eWeLink app when the reading leaves the band	Yes Catalog note App, email and text/SMS alerts
Connectivity
2.4 GHz Wi-Fi	No	No
5 GHz Wi-Fi	No	No
Bluetooth	Yes Catalog note Proximity Mode pairs the sensor straight to a phone over Bluetooth in the eWeLink app, with live readings, history and Bluetooth OTA updates, and no gateway involved	No
Other	No	Yes Catalog note LoRa, up to 1/4 mile range (YoLink hub required)
Thread	No	No
Z Wave	No	No
Zigbee	Zigbee Hub required Catalog note Zigbee 3.0 end device on IEEE 802.15.4. The full feature set (remote access, scenes, alerts, remote temperature display) needs a gateway such as the ZBBridge-P, ZBBridge-U, NSPanel Pro or iHost, or a ZBDongle running Zigbee2MQTT or ZHA	No
Display
Color Screen	No	Not applicable / unspecified
Date	No	Not applicable / unspecified
Screen	Yes	No
Screen Resolution	Not recorded	Not applicable / unspecified
Screen Size	3.6" Manufacturer source The LCD measures 3.6 inches. Sonoff SNZB-02DR2 AirGuard TH manufacturer product page → Source section Product description Model Sonoff SNZB-02DR2 AirGuard TH Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Remote sensor readings require compatible devices on the same SONOFF gateway. Document check only; not a hands-on test or verification of every regional or firmware variant.	Not applicable / unspecified
Screen Type	LCD Manufacturer source The device uses an LCD. Sonoff SNZB-02DR2 AirGuard TH manufacturer product page → Source section Product description Model Sonoff SNZB-02DR2 AirGuard TH Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Remote sensor readings require compatible devices on the same SONOFF gateway. Document check only; not a hands-on test or verification of every regional or firmware variant.	Not applicable / unspecified
Time	No Catalog note The screen layout published by SONOFF carries signal, battery, current and 24-hour max/min temperature and humidity, plus the remote sensor readings, and no clock	Not applicable / unspecified
Touch Screen	No Catalog note A single physical button on the back handles wake-up, the temperature unit and pairing	Not applicable / unspecified
Weather Forecast	No	Not applicable / unspecified
Features
Automations	Yes Catalog note Smart scenes trigger above or below a temperature or humidity threshold, or when the device goes offline, with a false alarm delay. The sensor is a trigger only, never an action	Yes
History Records	Yes Catalog note Six months of records with average, max and min curves by day, week, month and half year, plus calculated dew point and VPD, and CSV export	Yes
Integrations
Alexa	Yes Catalog note SONOFF lists Alexa temperature voice queries, and an Echo with a built-in Zigbee hub (Echo Plus 2nd, Echo 4th, Echo Show 2nd) is named as a compatible gateway	Yes
Apple Home	SONOFF Hub required Catalog note The device is Zigbee, not HomeKit. SONOFF republishes it into the Apple Home app through its own Matter bridges (ZBBridge-U, eWeLink CUBE)	YoLink Local Hub required Catalog note The YoLink Local Hub bridges YoLink devices to Matter, which is how they reach the Apple Home app. The older cloud-only YoLink hubs have no Apple Home path.
Google Home	Yes Catalog note SONOFF lists Google Home voice queries for both temperature and humidity	Not recorded
Home Assistant	Yes Catalog note Supported by Zigbee2MQTT, and by ZHA with the script SONOFF publishes in its help center	Yes
Matter	SONOFF Hub required Catalog note Not a Matter device itself: SONOFF bridges it into Matter through the ZBBridge-U and eWeLink CUBE	YoLink Local Hub required
SmartThings	Yes Catalog note SONOFF lists the Aeotec SmartThings Hub V3 as a compatible Zigbee gateway, with temperature and humidity voice queries on SmartThings	YoLink Local Hub required Catalog note Via Matter
Power
Battery Life	Not recorded	5 years
Battery Type	2x AAA	2x AA
Sensors
Air Quality	No	No
Atmospheric Pressure	No	No
Humidity	Yes Manufacturer source The sensor measures relative humidity. Sonoff SNZB-02DR2 AirGuard TH manufacturer product page → Source section Product description Model Sonoff SNZB-02DR2 AirGuard TH Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Accuracy 2% RH over 0 to 100% RH, resolution 1% RH on the screen and 0.1% in the app	Yes
Occupancy	No	No
Temperature	Yes Manufacturer source The sensor measures air temperature. Sonoff SNZB-02DR2 AirGuard TH manufacturer product page → Source section Product description Model Sonoff SNZB-02DR2 AirGuard TH Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Sensirion sensor, accuracy 0.2 C over the -20 to 60 C range, resolution 0.1 C	Yes Catalog note Wide temperature range

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology