Sonoff SNZB-02M AirGuard TH Pressure Sensor vs YoLink Smart Wireless Thermometer Hygrometer

The YoLink Smart Wireless Thermometer Hygrometer, on price and owner rating. The Sonoff SNZB-02M AirGuard TH Pressure Sensor wins on sensors, since it is the only one of the two that also measures barometric pressure.

Barometric pressure. The Sonoff SNZB-02M AirGuard TH Pressure Sensor measures it and derives dew point and VPD from it; the YoLink Smart Wireless Thermometer Hygrometer reports only temperature and humidity.

The YoLink Smart Wireless Thermometer Hygrometer, whose LoRa radio is rated up to a quarter mile from its hub. The Sonoff SNZB-02M AirGuard TH Pressure Sensor is Zigbee, which depends on mesh coverage from nearby devices instead.

Yes, both do. The Sonoff needs a Zigbee coordinator and the YoLink needs its own hub; neither has Wi-Fi or Bluetooth of its own.

Zigbee households that want barometric pressure alongside temperature and humidity, and the dew point and VPD figures the app calculates from it, most useful in a greenhouse or cellar.

Buyers monitoring a freezer, greenhouse or outbuilding who want the lower price, the better-reviewed sensor, and app, email and text alerts, especially if a YoLink hub is already in place.