SONOFF SNZB-02B AirGuard TH Lite Zigbee Temperature & Humidity Sensor – ±0.2°C Accuracy, Dew Point & VPD, 6-Month Data (Zigbee Hub Required)

See the hidden conditions in your home before they become a problem. The SONOFF SNZB-02B AirGuard TH Lite is a compact Zigbee temperature and humidity sensor that measures with ±0.2°C temperature accuracy and ±2% RH humidity accuracy, using a Sensirion sensor. It also calculates dew point and VPD automatically, helping you spot condensation risks early and keep rooms, collections, and plants in the ideal range. 🌡️💧✨

Data refreshes every 5 seconds, so you always see what is happening now. Set your comfort range in the app, get an instant alert when readings go outside it, and let your fan, dehumidifier, or heating run automatically through smart scenes.

⚠️ Important Note
A Zigbee gateway is required, and it is sold separately. The sensor is for indoor use and is powered by 2 AAA batteries, so please check the package contents for included batteries. ✅📡

🎯 High-Accuracy Sensing
✅ Temperature accuracy ±0.2°C (±0.4°F)
✅ Humidity accuracy ±2% RH
✅ Data refresh every 5 seconds
Precise readings you can trust. 📊✅

💧 Dew Point & VPD Monitoring
✅ Detect condensation risk early
✅ Help reduce the chance of mold on walls, furniture, and valuables
✅ Track VPD for healthier plant conditions
Turn invisible humidity risks into clear data. 🌿✅

📏 Slim Design for Small Spaces
✅ Only 27.8mm wide and 20mm thick
✅ Hang it with the lanyard or use adhesive mounting
✅ Fits guitar cases, humidors, jewelry cabinets, wine racks, and more
Small enough to go almost anywhere. 🎸✅

🔋 Long-Lasting AAA Battery Power
✅ Two standard AAA batteries, easy to replace
✅ Up to about 2 years of battery life
No charging and no wiring. ⚡✅

🗂️ 6-Month Data History
✅ View temperature, humidity, dew point, and VPD trends in the app
✅ Up to 6 months of history with data export
Understand long-term changes at a glance. 📈✅

🤖 Smart Scenes & Alerts
✅ Set your own comfort range with instant alerts
✅ Automatically switch on a fan or dehumidifier
✅ Use the real room temperature to guide a compatible smart radiator valve
Comfort that adapts to your room. 🏠✅

🔗 Works With Popular Platforms
✅ eWeLink app through a SONOFF Zigbee hub
✅ Alexa and Google Home through a compatible hub
✅ Apple Home through a Matter bridge
Fit it into the smart home you already use. 🌐✅

📏 Specifications
✅ Model: SNZB-02B, Zigbee 3.0
✅ Size: 66.3 × 27.8 × 20mm
✅ Operating: -20°C to 60°C, 5%-95% RH, non-condensing
✅ Indoor use
Compact, accurate, and easy to place. 🏠✅

📦 What's in the Box?
✅ SONOFF SNZB-02B Temperature & Humidity Sensor ×1
✅ Lanyard and Mounting Accessories
✅ User Manual ×1

If you want a Zigbee temperature and humidity sensor with high accuracy, dew point and VPD monitoring, a slim design, and long battery life, the SONOFF AirGuard TH Lite is a small guardian for every room. 🚀🌡️🏠