4 Pack SONOFF SNZB-02B AirGuard TH Lite Zigbee Temperature Humidity Sensor Slim Design Accuracy Sensing Dew Point VPD Monitoring
Zigbee Temperature Humidity Sensor | SNZB-02B
Requires Zigbee hub
Precision You Can Trust
Equipped with an industrial-grade Swiss Sensirion sensor, data refreshes every 5 seconds to accurately capture changes in ambient temperature and humidity.
Compact Design Fits Anywhere
Compact and exquisite design allows easy placement even in small spaces; equipped with a lanyard, it can be hung freely anywhere.
Also Fits Perfectly In
Hidden Threats You Can Now Monitor
Supports dew point and VPD monitoring, turning invisible environmental threats into visible data.
Say goodbye to moldy walls—start by monitoring the dew point.
Stop guessing, start measuring—VPD is the grower's true compass
No More “Low Battery” Anxiety
Powered by 2 standard AAA batteries, with a battery life of up to 2 years — no wiring, no charging, just quietly guarding.
The battery life data is a theoretical value, obtained from SONOFF's internal laboratory under a specific test environment. Actual use may vary slightly due to product differences, firmware software versions, operating conditions, and environmental factors. Please refer to the actual use.
Intelligent Sensing. Automatic Control
You can freely set your comfort range and customize smart scenes. When the environment exceeds the preset range, you’ll receive an instant alert, and appliances like electric fan and dehumidifier will automatically turn on.
Let The Room Decide, Not The Radiator
Place the sensor where you live. It detects the real room temperature and tells your smart valve when to stop — so you stay comfortable, not just the radiator.
It Remembers The Last 6 Months
Enjoy 6 months of free cloud storage and track temperature and humidity changes at any time. With data export support,
every analysis is backed by solid evidence.
Hands-Free Voice Commands
Note: This function requires adding the device to the eWeLink app and syncing it to third-party platforms via cloud-to-cloud integration; This process does not involve direct connection to the third-party gateway.
Works with Apple Home Via Matter Bridge
All solutions integrate SONOFF Zigbee devices into your Apple ecosystem via Matter Bridge, enabling seamless interconnected device control.
Learn More about ZBBridge-U | Learn More about eWeLink CUBE
Easily Integrates with Open-Source Platforms
Built on the Zigbee 3.0 standard, this device effortlessly connects with a wide range of third-party platforms.
Currently, using the AirGuard TH Lite with ZHA requires the script. For detailed instructions, please refer to: //help.sonoff.tech/docs/SNZB02B
Zigbee Hub Compatibility
Product Comparison
Specifications
Package
Includes 2 AAA batteries
