Sonoff AirGuard TH SNZB-02DR2 Zigbee LCD temperature and humidity sensor

19,90 €
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Product code: 398210-1
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The Sonoff AirGuard TH SNZB-02DR2 smart sensor with a large 3.6" LCD display accurately measures temperature and humidity in real time. It offers laboratory-grade accuracy ±0.2 °C / ±2% RH, stable ZigBee 3.0 connectivity, Bluetooth Proximity mode without a hub, a 24h min/max overview, a comfort indicator, and data history with charts. Ideal for bedrooms, kids’ rooms, greenhouses, and pantries—ensuring a healthy indoor climate without compromise.

The large, easy-to-read 3.6" LCD display shows current temperature, humidity, 24-hour minimums and maximums, and battery status. Thanks to the premium Sensirion SHT40 sensor, you get exceptionally accurate and stable measurements that help prevent mold and maintain a healthy environment for sleep, children, and plants.

With ZigBee 3.0, the sensor works reliably and efficiently; when connected to a hub it enables notifications and automations (e.g., turning on a humidifier or ventilation when thresholds are exceeded). In Proximity mode via Bluetooth, you can conveniently check readings, calibrate the sensor, switch °C/°F, and export data without a hub.

History and analytics in the app provide clear charts with daily, weekly, and long-term statistics, including dew point, VPD, and comfort levels. With compact dimensions and options for standing or hanging, it fits bedrooms, offices, basements, and storage rooms.

  • Measurement accuracy: ±0.2 °C and ±2% RH
  • Wide range: -20 °C to 60 °C, 5–95% RH (non-condensing)
  • Smart integrations: SONOFF, Home Assistant, Zigbee2MQTT, SmartThings, Alexa, Google Home, Matter Bridge
  • Energy-efficient battery power: 2× AAA
  • Fast response and stability: ZigBee 3.0 (IEEE 802.15.4)

Specifications

Manufacturer
Sonoff
Model
SNZB-02DR2 (AirGuard TH)
Device type
Smart temperature and humidity sensor (ZigBee + Bluetooth)
Wireless connectivity
ZigBee 3.0 (IEEE 802.15.4) + Bluetooth (Proximity mode)
Display
3.6" high-contrast LCD
Displayed data
Current temperature, current humidity, 24 h min/max, comfort index, battery status
Measuring sensor
Sensirion SHT40
Temperature accuracy
±0.2 °C
Humidity accuracy
±2% RH
Temperature range
-20 °C to 60 °C
Humidity range
5–95% RH (non-condensing)
Temperature units
°C / °F (switchable)
Data logging
Measurement history, charts, min/max, daily and long-term statistics (up to approx. 6 months in the app)
In-app analytics
Dew point, VPD, comfort level
Notifications
Alerts for exceeding temperature and humidity thresholds
Power supply
3.0 V DC
Battery type
2 × AAA / LR03 1.5 V
Microcontroller (MCU)
TLSR8656F512ET32
Enclosure material
PC + ABS
Color
White
Dimensions
95 × 70 × 18.2 mm
Weight
99.3 g (with batteries)
19,90 €