Why it matters
The SONOFF SNZB-02D Temperature and Humidity Sensor is a temperature and humidity monitor with a stated temperature accuracy of 0.2 degrees celsius.
A hygrometer tells you whether you need a humidifier or a dehumidifier: aim for 40 to 60 percent relative humidity indoors.
The listing names app control, voice-assistant support and 2 sensors in the box.
Price-wise it sat in the middle third of the 25 hygrometer models we cover when we checked; the button shows today's price.
It qualifies for our list Best Hygrometers for Home, where it is ranked against every model that meets the same rule.
The listing gives a weight of 139 g.
Who it's for, and who should skip it
Good fit if
- Setting a humidifier or dehumidifier
Look elsewhere if
- Replacing a CO or smoke alarm
Pros and cons
Pros
- Temperature ±0.2 degrees celsius
Cons
- Readings need a few hours to settle after moving it
Limitations to weigh
- Not stated on the SONOFF SNZB-02D Temperature and Humidity Sensor listing: humidity range, connectivity, power source. Ask the seller or check the manual before relying on it.
Specifications
The bracket shows where each figure comes from.
| Product weight | 139 g | Retailer |
|---|---|---|
| Voltage | 3 volts | Retailer |
| Temperature accuracy | 0.2 degrees celsius | Retailer |
| Pack count | 2 | Retailer |
Alternatives worth comparing
More air quality monitors we cover
Final verdict
A well-matched choice for setting a humidifier or dehumidifier. Confirm the model it fits before ordering.
Where to buy
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