SONOFF SNZB-02D Zigbee LCD Smart Temperature & Humidity Sensor

Keep your home's environment in check with the SONOFF SNZB-02D Zigbee Smart Temperature & Humidity Sensor. Featuring a large 2.5” LCD screen with bold numbers and intuitive comfort icons, this advanced sensor delivers highly accurate temperature and humidity monitoring powered by a Swiss-made sensor with ±0.2℃ temperature and ±2% RH accuracy.

Compatible with Zigbee 3.0 gateways such as SONOFF ZBBridge Pro, ZBDongle-P/E, NSPanel Pro, and even Alexa with built-in Zigbee Hub, SNZB-02D keeps you connected to your indoor climate in real time—whether you're home or away.

Thanks to app-based real-time monitoring and historical data logging, you can view environmental trends daily, monthly, and yearly through intuitive curve graphs. The data updates every 5 seconds and supports cloud storage of up to 6 months, exportable as .CSV for more detailed tracking and analysis.

When the sensor detects a temperature or humidity level outside your preset comfort range, it sends you instant alerts via the eWeLink App. Set smart scenes such as automatically activating a humidifier when humidity drops below 40%, or controlling heating and cooling systems based on sensor triggers.

The sensor integrates with Alexa and Google Home, letting you ask for the current temperature or humidity with your voice. Install it wherever needed—living room, greenhouse, baby’s room, guitar storage, terrarium, humidor, or more—thanks to 3 flexible mounting options: tabletop stand, magnetic back, or 3M adhesive.

Key Features & Benefits:

✅ Large 2.5" LCD Screen
Clear and bold display with Hot/Cold/Dry/Wet icons and battery level indicators.

✅ High-Precision Swiss Sensor
Temperature accuracy: ±0.2°C
Humidity accuracy: ±2%RH
Data refresh every 5 seconds.

✅ Zigbee 3.0 Compatible
Works with Zigbee 3.0 gateways like SONOFF ZBBridge Pro, NSPanel Pro, ZBDongle-E, and Alexa with built-in Zigbee.

✅ App Monitoring & Smart Alerts
Track real-time data and receive push alerts when temperature or humidity exceeds your defined comfort zones.

✅ Smart Scene Automation
Trigger scenes like turning on a humidifier if humidity < 40% or cooling fan if temperature > 30°C.

✅ 6-Month Historical Data + CSV Export
Monitor and export historical environmental data for deep analysis and long-term tracking.

✅ Voice Control Support
Check current temperature or humidity via Alexa or Google Home.

✅ 3 Mounting Options
Tabletop stand, magnetic back, or adhesive backing—place it anywhere with ease.

✅ Wide Coverage
Up to 120 meters / 400 ft transmission range (ideal, unobstructed conditions).

Technical Specifications:

• Model: SONOFF SNZB-02D

• Wireless Protocol: Zigbee 3.0

• Temperature Range: -9.9°C to 60°C

• Humidity Range: 5% to 95% RH (non-condensing)

• Temperature Accuracy: ±0.2°C

• Humidity Accuracy: ±2% RH

• Battery Type: CR2450 (3V)

• Display: 2.5” LCD with icons and power indicator

• Update Frequency: Every 5 seconds

• Mounting Options: Tabletop stand, Magnetic back, 3M adhesive

• Material: PC + LCD

• Dimensions: [Not provided – can be added if needed]

• Certifications: CE / FCC

• App Support: eWeLink (iOS & Android)

• Voice Assistants: Alexa, Google Home

• Integration: Home Assistant via eWeLink add-on

What’s in the Package?
📦 1 x SONOFF SNZB-02D Temperature & Humidity Sensor
📦 1 x CR2450 Battery
📦 1 x Magnetic Plate
📦 1 x 3M Adhesive Pad
📦 1 x User Manual