A Zigbee 3.0 temperature and humidity sensor with a large, easy-to-read LCD. Glance at the screen for the current reading or check it from anywhere in the eWeLink app, get an alert when a room gets too hot, cold, damp or dry, and let it switch your air conditioning, heating or dehumidifier automatically.
Accuracy
±0.2 °C / ±2 % RH
Main features
Large LCD
Readable at a glance
Temperature, humidity, a comfort indicator and battery level are always on the display, so you know how a room feels without opening the app.
Swiss-made sensor
Precise readings
A Swiss-made sensing element measures to within ±0.2 °C and ±2 % RH, and the reading refreshes every five seconds.
History
See the trends
Up to six months of free cloud history with hourly detail, daily highs and lows, and export to a file for your own analysis.
App alerts
Know when something changes
Set a comfort range and get a push notification on your phone when it is crossed. Useful for a baby room, a wine store, a greenhouse or a server cupboard.
Long range
Up to 120 m in open space
Zigbee 3.0 gives a range of up to 120 metres without obstacles, and the mesh network grows stronger as you add mains-powered Zigbee devices.
Mounting
Stand it, stick it or hang it
Use the fold-out stand on a shelf, the adhesive pad on a wall or the magnetic mount: three ways to put it exactly where you need it.
Smart scenes
Automate your comfort
Use temperature and humidity as triggers. For example, turn on a humidifier when humidity drops below 40 % or switch the air conditioning on when a room passes 26 °C.
Compatibility
SONOFF Zigbee Bridge ProSONOFF NSPanel ProSONOFF iHostZBDongle-E / ZBDongle-PHome Assistant (ZHA, Zigbee2MQTT)Amazon AlexaGoogle HomeApple Home (Matter Bridge)
Good to know
Requires a Zigbee 3.0 gateway (not included), such as the SONOFF Zigbee Bridge Pro, the NSPanel Pro or a ZBDongle with Home Assistant.
Specifications
General
| Brand | SONOFF |
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| Model | SNZB-02D |
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| Colour | White |
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| Display | LCD |
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Measurement
| Temperature accuracy | ±0.2 °C |
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| Humidity accuracy | ±2 % RH |
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| Refresh rate | 5 s |
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| Working temperature | -9.9 to 60 °C |
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| Working humidity | 5–95 % RH, non-condensing |
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Power & connection
| Battery | CR2450 (3 V) |
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| Wireless | Zigbee 3.0 |
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| Range | Up to 120 m (open space) |
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| Casing | PC + LCD |
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