SONOFF AirGuard TH 3.6'' LCD Zigbee Temperature And Humidity Sensor | SNZB-02DR2
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Technical details, troubleshooting or setup tips? Access the AirGuard TH knowledge center for all the info you need.
Every Change Displayed.
Every Comfort Guarded.
AirGuard TH - 3.6'' LCD Zigbee Temp. & Humi. Sensor
Built for Reliable Performance
3.6'' LCD Screen, Data at a Glance
Readable at a comfortable distance
Clear enough for everyone
Display at home, monitor from anywhere
Achieve remote, real-time monitoring through the eWeLink App. For example, check if the temperature in the kitchen remain stable in the living room after the oven starts working.
Accurate Logging & Advanced Analytics
Dual-Sensor Display, Double the Protection
Enable Remote Temperature Display to view data from another sensor on the same gateway directly on AirGuard TH—letting you monitor conditions in another room or area at a glance—saving time and giving you extra peace of mind
Check the Nursery Without Leaving Bed
Check your weather cue before stepping out
NOTE:
* Supported devices for Temperatrue: AirGuard TH (require firmware v1.1.0 or above), SNZB-02P,SNZB-02D, SNZB-02WD, SNZB-02LD
* The remote device must be connected to the same SONOFF Zigbee gateway, including: Bridge-P, Bridge-U, NSPanel Pro, iHost
Link to More Real-life Scenarios
AirGuard TH operates reliably from –20–60°C and 0–100% RH, covering nearly all home environments. With its Remote Temperature Display, you can pair it with various other sensor types under the same gateway and unlock more versatile monitoring scenarios.
Wine Cellar
Greenhouse
Swimming Pool
Pantry
Trigger Whole-Home Environment Control
Automatically triggers smart scenes and sends instant alerts to your phone when temperature or humidity crosses your set thresholds——keeping your entire home in balance, effortlessly.
No gateway? Try ‘Proximity Mode’!
For easier use of AirGuard TH, you can connect the device directly to your phone. No hub required and still enjoy real-time Temp. & Humi. monitoring and analytics within communication range.
Note：Once the device is connected to a gateway, Proximity Mode will be disabled. Switching modes will restore the device to factory settings.
Voice Control with Alexa, Google Home & More
Check Temp. & Humi. readings with your voice.
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.
Easily Integrates with Open-Source Platforms
Integrate your devices into the Home Assistant open-source platform with SONOFF Dongle Series, create your own temperature control solution.
*Currently, using the AirGuard TH with ZHA requires the script. For detailed instructions, please refer to: https://help.sonoff.tech/docs/SNZB02DR2
Zigbee Hub Compatibility
Note: Please upgrade your gateway to the latest firmware version before adding the device.
AirGuard Series Comparison
4 Steps to Use
Easily set up. Download the APP, scan the QR code to connect with the zigbee hub and control!
Specs & User Manual
AirGuard TH is a Zigbee LCD temperature and humidity sensor designed for comprehensive indoor climate monitoring. Equipped with a 3.6-inch large display, it shows real-time temperature, humidity, 24-hour extremes, and remote sensor data at a glance. The data can be monitored via App and viewed in multiple curves and charts. In Zigbee mode, it can link with SNZB-02/02P/02WD/02D/02LD devices to instantly display other sensor readings, enabling fast checks without using a phone or entering the room. It calculates dew point and VPD curves for quantitative air quality insights and supports adjustable reporting intervals for tailored data updates. Voice query is avaliable after integrated with Alexa, Google Home and SmartThings, making climate management smarter and more convenient.
User Manual (PDF)Model
SNZB-02DR2
MCU
TLSR8656F512ET32
Zigbee
IEEE 802.15.4
Net weight
99.3g (Battery included)
Product dimension
95x70x18.2mm
Casing material
PC+ABS
Working temperature
-20~60 °C
Working humidity
5%~95% RH, non-condensing
Certification
CE/FCC/RoHS
FCC ID
2APN5-SNZB02DR2
FAQ
1. What does minimum resolution mean? What is the minimum resolution of the AirGuard TH?
The smallest measurable change that causes the displayed value on the AirGuard TH to update. Simply put, it refers to how many decimal places the screen data is precise to.
As for AirGuard TH:
- Temperature: 0.1°C / 0.1°F
- Humidity: 1% RH on display; 0.1% on app
2. What does accuracy mean? What's the Accuracy of AirGuard TH?
Accuracy refers to the maximum deviation between the measured value and the true value.
As for AirGuard TH:
- Temperture: ±0.2℃（-20~60℃）
- Humidity: ±2%RH （0~100%RH）
3. What's the default reporting interval and reportable change? How can I adjust it?
- Temperature reportable change: default ±0.2℃, range ±0.2~±1℃
- Humidity reportable change: default ±1%RH, range ±1%RH~±5%RH
If there's a change in value, the default reporting interval is 5s and the ajustable range is 5s~1h.
4. Does it support use on open-source platforms?
Yes. For example, with Home Assistant, you can pair the device using Dongle Series, add it via ZHA or Zigbee2MQTT (Z2M).
Please note that currently you need a script to add it to ZHA, please check the instruction and the script at SONOFF Help Center.