SNZB-02B Temperature and Humidity Sensor, Zigbee

SONOFF AirGuard TH Lite Zigbee Temperature and Humidity Sensor | SNZB-02B

The SNZB-02B (AirGuard TH Lite) is a Zigbee temperature and humidity sensor designed for precise environmental monitoring. It measures temperature and humidity with high accuracy and automatically calculates the dew point and VPD for more in-depth environmental analysis. Data is updated every 5 seconds to ensure reliable real-time monitoring. The compact design fits easily into small spaces and supports both hanging and mounting with adhesive strips. The device is powered by two standard AAA batteries, which can be conveniently replaced without tools. The app provides real-time readings and up to 6 months of historical data.

High-Precision Measurement Measures temperature with ±0.2°C (±0.4°F) accuracy and humidity with ±2%RH accuracy. Data is updated every 5 seconds for reliable real-time monitoring.

Dew Point & VPD Monitoring Goes beyond basic temperature and humidity monitoring with real-time analysis of dew point and vapor pressure deficit (VPD). Detects condensation risks early, helps prevent mold growth on walls, furniture, and valuables, and ensures ideal transpiration conditions for healthier plants.

Slim Design for Small Spaces Only 27.8 mm wide and 20 mm thick. Supports both hanging and adhesive mounting for flexible installation in guitar cases, cigar humidors, jewelry cabinets, wine racks, and other tight spaces.

Long Battery Life Powered by two standard AAA batteries that can be easily replaced without special tools, offering up to 2 years of battery life for long-lasting, maintenance-free operation.

6 Months of Data History Displays temperature, humidity, dew point, and VPD trends in the app at any time. Access up to six months of historical data to monitor long-term environmental changes.

Compact design fits anywhere The compact and elegant design allows for easy placement even in small spaces; equipped with a cord, it can be hung freely anywhere.

No more worries about “dead batteries" Runs on 2 standard AAA batteries, with a battery life of up to 2 years-no cables, no charging, just quiet monitoring.

Smart Sensors. Automatic Control You can freely set your comfort zone and customize smart scenes. If the ambient temperature exceeds the preset range, you’ll receive an immediate notification, and devices like fans and dehumidifiers will turn on automatically.

Let the room decide, not the radiator Place the sensor where you live. It measures the actual room temperature and tells your smart valve when to stop-so you stay warm, not just the radiator.

It stores the last 6 months' data Enjoy 6 months of free cloud storage and track temperature and humidity fluctuations at any time. With support for data export, every analysis is backed by solid evidence.

Works with Apple Home via Matter Bridge, All solutions integrate SONOFF Zigbee devices into your Apple ecosystem via Matter Bridge, enabling seamless, connected device control.

Easy to integrate with open-source platforms Based on the Zigbee 3.0 standard, this device connects effortlessly to a wide range of third-party platforms.