Sonoff SNZB-02WD IP65 Zigbee Temperature and Humidity Sensor

The Sonoff SNZB-02WD IP65 Zigbee Temperature and Humidity Sensor is an intelligent wireless sensor that measures temperature and humidity in real-time and displays them clearly on a 2.2″ LCD display. Thanks to its weatherproof IP65 housing with an integrated breathable membrane, it works reliably even in very humid or dusty environments. This makes it ideal for locations such as bathrooms, greenhouses, or outdoor areas. The high-quality sensor offers high-precision measurements with an accuracy of ±0.2 °C for temperature and ±2 % for humidity, allowing even small changes to be detected immediately. The display also shows the current signal strength and battery level, so the status is always in view. The SNZB-02WD communicates via the Zigbee 3.0 protocol and requires a compatible Zigbee hub for integration into the smart home. The measurement values can be conveniently monitored on the smartphone via the eWeLink app, storing up to 180 days of historical data or exporting them if needed. These long-term recordings help to identify climate trends and optimize plant care in the greenhouse, for example. Users can set up individual scenarios to automatically switch other devices or receive notifications when predefined thresholds are reached – for example, the heating is turned on when it gets too cold or a humidifier is activated when the air is too dry. Querying values via voice control (e.g., via Alexa) is also possible. With a battery life of up to 2 years and flexible mounting options (built-in magnets for metal surfaces or hanging via lanyard), the compact sensor is suitable for numerous applications from living rooms to the basement and outdoors.

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Features:

• Zigbee2MQTT & Home Assistant: Fully compatible Zigbee sensor, directly integrable into Zigbee2MQTT and Home Assistant (Zigbee hub required).
• IP65 Housing: Dustproof, splash-proof, and UV-resistant, suitable for outdoor areas and humid indoor spaces.
• 2.2" LCD Display: Local display of temperature and humidity in real-time.
• Accurate Measurement: Temperature accuracy ±0.2 °C, humidity ±2 % RH.
• Zigbee 3.0: Works with common gateways like SONOFF iHost, NSPanel Pro, ZBBridge, etc.
• Data Logging via App: eWeLink app with live values, up to 180 days of historical data, and export function.
• Automations & Alarms: Supports scenes, switching operations, and push notifications for exceeded thresholds.
• Long Battery Life: Up to 2 years of operation with a CR2477 button cell (Zigbee Low-Power).
• Flexible Mounting: Rear magnet for metal surfaces and hanging attachment with lanyard.

Application Examples:

• Indoor climate monitoring in living rooms and bedrooms for constant temperature and humidity.
• Bathroom and basement control to prevent mold through moisture monitoring.
• Monitoring of greenhouse/garden and controlling irrigation when the air is too dry.
• Temperature alarm in sensitive environments (e.g., terrarium) on sudden drops.
• Automatic control of a bathroom fan when the humidity exceeds a threshold after showering.

Documentation:

• Manual and Technical Data
• Zigbee2MQTT

Technical Specifications:

• Manufacturer: Sonoff
• Manufacturer SKU: SNZB-02WD
• Display: 2.2 inch LCD
• Protocol: Zigbee 3.0 (IEEE 802.15.4)
• Display: Selectable in °C/°F
• Temperature Measurement Range: -20 °C to +60 °C
• Humidity Measurement Range: 0 % to 100 % RH (relative humidity)
• Temperature Accuracy: ±0.2 °C
• Humidity Accuracy: ±2 % RH
• Battery: 1× CR2477 lithium button cell, 3 V
• Battery Life: Up to 2 years
• Protection Class: IP65 (dustproof & splash-proof)
• Material: PC + ABS (plastic)
• Color: White
• Certifications: CE, FCC, ISED, RoHS
• Dimensions: 63 × 59 × 22 mm
• Weight: 85g

Delivery Contents:

• 1× Sonoff SNZB-02WD Sensor (incl. battery)
• 1× Lanyard
• 1× Reset Pin
• 1× User Manual