Sonoff SNZB-02M AirGuard TH Pressure Sensor vs X-Sense STH0B Smart Thermometer Hygrometer

The Sonoff SNZB-02M AirGuard TH Pressure Sensor for most buyers. It adds barometric pressure, runs over two years on one cell, and supports more platforms. The X-Sense STH0B Smart Thermometer Hygrometer is the better pick only when an X-Sense SBS50 base station is already installed and the sensor needs reach far beyond the router.

The pressure sensor against a long-range base-station link. The Sonoff SNZB-02M AirGuard TH Pressure Sensor measures barometric pressure directly and reports over Zigbee, while the X-Sense STH0B Smart Thermometer Hygrometer has no pressure sensor but reaches its base station over an 868 MHz link rated for up to 500 m.

No. The X-Sense STH0B Smart Thermometer Hygrometer measures temperature and humidity only. Its app derives dew point and VPD from those two readings, but there is no barometric pressure sensor, which the Sonoff SNZB-02M AirGuard TH Pressure Sensor does have.

No. The Sonoff SNZB-02M AirGuard TH Pressure Sensor is a Zigbee 3.0 end device with no Wi-Fi or Bluetooth, so it needs a coordinator such as a Sonoff bridge, an iHost or a Zigbee2MQTT dongle.

The Sonoff SNZB-02M AirGuard TH Pressure Sensor, rated for over two years on a CR2477 cell, against about one year on two AAA batteries for the X-Sense STH0B Smart Thermometer Hygrometer.

Yes. The X-Sense STH0B Smart Thermometer Hygrometer has no Wi-Fi of its own and communicates over a proprietary 868 MHz radio, so an X-Sense SBS50 base station is required before it reports anything.