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$14.99
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Updated October 2026
Data from the official X-Sense site.
2026 verdict
Two screenless X-Sense sensors from a base-station home, and the X-Sense Smart WiFi Indoor Thermometer edges this one mainly on its five year warranty and a lower price.
Both measure temperature and humidity, both report only through an X-Sense SBS50 base station, and both support Alexa and a community Home Assistant integration with no automations of their own. The X-Sense STH0B Smart Thermometer Hygrometer answers with a proprietary 868 MHz link rated for up to 500 m and an app that adds dew point, VPD and CSV export, while its warranty runs two years. Buy the X-Sense Smart WiFi Indoor Thermometer for the longer coverage, and the X-Sense STH0B Smart Thermometer Hygrometer for a sensor placed far from the base.
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| Feature | X-Sense Smart WiFi Indoor Thermometer | X-Sense STH0B Smart Thermometer Hygrometer | Winner |
|---|---|---|---|
| Warranty | 5 years | 2 years | X-Sense Smart WiFi Indoor Thermometer |
| Price | $11.49 | $11.49 | Tie |
| Rating | 4.5 | 4.5 | Tie |
| Battery Life | 1 year | 1 year | Tie |
| Connectivity | Other | Other | Tie |
| Screen | NO | NO | Tie |
| Integrations | Alexa, Home Assistant | Alexa, Home Assistant | Tie |
| Sensors | Temperature, Humidity | Temperature, Humidity | Tie |
| Alerts | Temperature Alerts, Humidity Alerts, Low Battery Alerts | Temperature Alerts, Humidity Alerts, Low Battery Alerts | Tie |
What the differences mean
Warranty
The X-Sense Smart WiFi Indoor Thermometer carries five years. The X-Sense STH0B Smart Thermometer Hygrometer carries two, which is the clearest straightforward win for the older model.
The radio to the base station
The X-Sense STH0B Smart Thermometer Hygrometer adds a proprietary 868 MHz link rated for up to 500 m in the open to the same SBS50 base station. The X-Sense Smart WiFi Indoor Thermometer reports through the base station over the standard link, without the long-range claim.
History and derived data
The X-Sense STH0B Smart Thermometer Hygrometer app keeps 24/7 graphs with dew point and VPD and exports up to 180 days per CSV file. The X-Sense Smart WiFi Indoor Thermometer keeps history graphs without those derived figures.
Documented accuracy
The X-Sense STH0B Smart Thermometer Hygrometer publishes typical accuracy of 0.2 C and 2% RH across its ranges. No accuracy figures are published for the X-Sense Smart WiFi Indoor Thermometer, where owner comparisons are the only evidence.
Battery and display
Both run on two AAA cells for about a year and both are screenless, with only an indicator light. Neither is waterproof, and neither supports any platform beyond Alexa and a community Home Assistant integration.
Which one to buy if
- the longest warranty matters
The X-Sense Smart WiFi Indoor Thermometer is covered for five years, well beyond the two years on the X-Sense STH0B Smart Thermometer Hygrometer.
- the sensor sits far from the base station
The X-Sense STH0B Smart Thermometer Hygrometer uses an 868 MHz link rated for up to 500 m in the open, further than the standard base-station link.
- you want dew point and VPD history with CSV export
The X-Sense STH0B Smart Thermometer Hygrometer app adds dew point, VPD and scheduled CSV export, which the other model's app does not.
- you already run X-Sense alarms and want the simplest add-on
The X-Sense Smart WiFi Indoor Thermometer shares the base station and app with the alarms and covers a room with no long-range configuration.
Winner
23% OFF
Prime exclusive deal$11.49
$14.99
- + Warranty: 5 years
23% OFF
Prime exclusive deal$11.49
$14.99
- - Warranty: 2 years vs 5 years
What owners say
Owners of the X-Sense Smart WiFi Indoor Thermometer praise a fast, guided setup that takes minutes and a stable long-term connection, and several compare the readings against lab-grade or laser thermometers and find them close to spot on. The range through multiple walls is repeatedly called impressive, and the app's history graphs and multi-base-station support let buyers track several remote locations from one account. Their complaints are that there is no screen, that reading levels depend on the app and a working base station, that humidity moves in coarser steps than temperature, that automations are missing, and that a minority hit app bugs.
Frequently Asked Questions
Which is better overall: X-Sense Smart WiFi Indoor Thermometer or X-Sense STH0B Smart Thermometer Hygrometer?
The X-Sense Smart WiFi Indoor Thermometer wins mainly on its five year warranty, against two years for the X-Sense STH0B Smart Thermometer Hygrometer. The newer STH0B adds a longer 868 MHz radio link, dew point, VPD and CSV export, so it is the better pick when the sensor has to sit far from the base station.
What is the biggest difference between the X-Sense Smart WiFi Indoor Thermometer and the X-Sense STH0B Smart Thermometer Hygrometer?
The warranty and the long-range radio. The X-Sense Smart WiFi Indoor Thermometer carries five years, while the X-Sense STH0B Smart Thermometer Hygrometer carries two but adds a proprietary 868 MHz link rated for up to 500 m to the base station.
Do both need an X-Sense base station?
Yes. Neither the X-Sense Smart WiFi Indoor Thermometer nor the X-Sense STH0B Smart Thermometer Hygrometer has Wi-Fi of its own. Both report through an X-Sense SBS50 base station over a proprietary radio.
Do both work with Alexa?
Yes. Both the X-Sense Smart WiFi Indoor Thermometer and the X-Sense STH0B Smart Thermometer Hygrometer support Alexa voice queries and a community Home Assistant integration. Neither supports Google Home, Apple Home, SmartThings or Matter.
Which one keeps dew point and VPD?
The X-Sense STH0B Smart Thermometer Hygrometer. Its app keeps 24/7 graphs with maximum, minimum and average values plus dew point and VPD, and exports up to 180 days per CSV file.
Which one has the longer warranty?
The X-Sense Smart WiFi Indoor Thermometer, at five years. The X-Sense STH0B Smart Thermometer Hygrometer is covered for two years.
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