Full Smart Temperature/Humidity Sensors comparison in 2026
Also sold in packs
Join Prime to buy it at $11.49
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
| Feature | Sonoff SNZB-02DR2 AirGuard TH | X-Sense STH0B Smart Thermometer Hygrometer | Winner |
|---|---|---|---|
| Price | $14.90 | $11.49 | X-Sense STH0B Smart Thermometer Hygrometer |
| Connectivity | Bluetooth, Zigbee | Other | Sonoff SNZB-02DR2 AirGuard TH |
| Screen | YES | NO | Sonoff SNZB-02DR2 AirGuard TH |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Alexa, Home Assistant | Sonoff SNZB-02DR2 AirGuard TH |
| Rating | 4.4 | 4.4 | Tie |
| Warranty | 2 years | 2 years | Tie |
| Sensors | Temperature, Humidity | Temperature, Humidity | Tie |
| Alerts | Temperature Alerts, Humidity Alerts, Low Battery Alerts | Temperature Alerts, Humidity Alerts, Low Battery Alerts | Tie |
The Sonoff SNZB-02DR2 AirGuard TH carries a 3.6 inch LCD with the current reading and the 24 hour high and low, legible from across a room. The X-Sense STH0B Smart Thermometer Hygrometer has only a red and blue indicator light, so every reading lives in its app.
The Sonoff SNZB-02DR2 AirGuard TH reaches Google Home, Apple Home, Samsung SmartThings and Matter, the last two through a Sonoff bridge, on top of Alexa and Home Assistant. The X-Sense STH0B Smart Thermometer Hygrometer stops at Alexa and Home Assistant, with no Google Home, Apple Home, SmartThings or Matter path.
The X-Sense STH0B Smart Thermometer Hygrometer talks to its own SBS50 base station over a proprietary 868 MHz link rated up to 500 m in the open, which reaches a detached garage or shed. The Sonoff SNZB-02DR2 AirGuard TH is Zigbee, mesh-extended by other Zigbee devices but dependent on a gateway from the start.
The Sonoff SNZB-02DR2 AirGuard TH can trigger its own smart scenes above or below a temperature or humidity threshold. The X-Sense STH0B Smart Thermometer Hygrometer has no automation engine of its own: crossing a threshold sends an alert, but nothing it does can act on it.
The Sonoff SNZB-02DR2 AirGuard TH's 3.6 inch LCD shows the current value and its 24 hour high and low; the X-Sense STH0B Smart Thermometer Hygrometer has no screen at all.
The X-Sense STH0B Smart Thermometer Hygrometer is a cheap add-on sensor for a system already installed, with no gateway of its own to buy.
The Sonoff SNZB-02DR2 AirGuard TH reaches both through a Sonoff bridge; the X-Sense STH0B Smart Thermometer Hygrometer supports neither.
The X-Sense STH0B Smart Thermometer Hygrometer's proprietary radio is rated for up to 500 m from its base station, well beyond a typical Zigbee mesh hop.
Sonoff SNZB-02DR2 AirGuard TH owners mention the screen most: several call the 3.6 inch display the reason they picked it over a screenless sensor, readable from across a room and useful in a nursery or office. Compatibility comes up almost as often, with buyers describing it being adopted instantly by Zigbee2MQTT, ZHA, Homey and a SmartThings hub, and more than one owner cross-checked the readings against a calibrated thermometer and found them accurate. The complaints cluster around the sleepy Zigbee device habit: a setting only takes effect once the button on the back is pressed, ZHA currently needs a script from Sonoff's help center, and the eWeLink app can lag behind what the screen already shows.
The Sonoff SNZB-02DR2 AirGuard TH, for its own 3.6 inch screen and wider platform reach across Google Home, Apple Home and SmartThings. The X-Sense STH0B Smart Thermometer Hygrometer answers with a lower price and a longer-range radio.
The screen. The Sonoff SNZB-02DR2 AirGuard TH has a 3.6 inch LCD readable from across a room, while the X-Sense STH0B Smart Thermometer Hygrometer carries only a status light and puts every reading in its app.
Only the Sonoff SNZB-02DR2 AirGuard TH, through a Sonoff Matter bridge such as the ZBBridge-U. The X-Sense STH0B Smart Thermometer Hygrometer supports Alexa and Home Assistant but not Apple Home, Google Home, SmartThings or Matter.
The X-Sense STH0B Smart Thermometer Hygrometer, whose proprietary radio to its SBS50 base station is rated up to 500 m in the open. The Sonoff SNZB-02DR2 AirGuard TH is Zigbee, which depends on mesh coverage from a gateway instead.
Anyone who wants the reading visible on a wall without opening an app, and who wants a Zigbee sensor that also reaches Google Home, Apple Home and SmartThings.
Owners who already run, or plan to run, an X-Sense SBS50 base station and want a cheap way to add a distant room or outbuilding.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonYou are looking at two of them. The full table lines up all Temperature & Humidity Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
15% OFF
23% OFF
23% OFF
15% OFF
30% OFF
16% OFF
20% OFF
15% OFF
15% OFF
15% OFF
23% OFF23% OFF
17% OFF
25% OFF
