SONOFF AirGuard TH – Zigbee Temperature and Humidity Sensor with 3.6" LCD Screen SNZB-02DR2
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SONOFF AirGuard TH – Zigbee Temperature and Humidity Sensor with 3.6" LCD Screen
An advanced environmental sensor from the AirGuard series equipped with a large, clear 3.6-inch LCD display. It enables real-time temperature and humidity monitoring, tracking measurement history, and smart home integration via the Zigbee 3.0 protocol.
The unique "Remote Display" function allows displaying data from other sensors in the network on this device's screen.
Key Features:
- Large 3.6'' LCD Screen – simultaneous display of current readings, 24h extremes, date, and time
- High Precision – temperature measurement accuracy ±0.2°C and humidity ±2% RH
- Remote Temperature Display – display data from another Sonoff sensor on the AirGuard TH screen
- Zigbee 3.0 Communication – stable connection, works with Sonoff gateways (Bridge, iHost, NSPanel Pro)
- Proximity Mode (Bluetooth) – ability to read data directly on the phone without a gateway
- Data Analysis – history up to 6 months, charts, dew point, VPD (in eWeLink app)
- Matter Support – via appropriate bridge (e.g., Sonoff Zigbee Bridge Ultra)
- Flexible Reporting – adjustable refresh intervals upon value change (as fast as every 5s)
3.6'' LCD Screen – Data at a Glance
The display is designed to be readable from a comfortable distance for every household member. It presents not only current conditions but also a comfort icon, battery level, and connection status.
"Remote Display" Function – Double the Knowledge
In Zigbee mode, the device can connect with other sensors (SNZB-02, SNZB-02D, etc.) connected to the same Zigbee gateway to display their readings. Check the temperature in the baby's room or outside by looking at the AirGuard TH screen in the living room.
Accurate Recording and Advanced Analysis
Track temperature and humidity in the eWeLink app. Access detailed data from the last 6 months, charts, as well as specialized dew point and VPD (Vapor Pressure Deficit) analysis – crucial, for example, for plant cultivation.
Whole Home Automation
The sensor automatically triggers smart scenes when parameters exceed set thresholds. It can turn on a fan when it's too hot, or a humidifier when the air is too dry.
Flexible Connectivity
No Zigbee gateway? Use Proximity Mode and connect via Bluetooth directly to your phone. Have an Apple ecosystem? Integrate the sensor via Matter Bridge.
Technical Specifications:
- Model: SNZB-02DR2 (AirGuard TH)
- Power Supply: 3.0V (2x AAA 1.5V battery)
- Protocol: Zigbee 3.0 (IEEE 802.15.4)
- Microcontroller: TLSR8656F512ET32
- Screen: 3.6 inch LCD
- Temp. Accuracy: ±0.2°C (range -20~60°C)
- Humidity Accuracy: ±2% RH (range 0~100% RH)
- Response Time: 5s (on value change)
- Operating Temperature: -20°C ~ 60°C
- Operating Humidity: 5~95% RH (non-condensing)
- Dimensions: 95 x 70 x 18.2 mm
- Weight: 99.3g (with batteries)
- Material: PC + ABS
- Certifications: CE / FCC / RoHS
Package Contents
- AirGuard TH Sensor (SNZB-02DR2) ×1
- AAA Batteries ×2 (installed)
- User Manual
- Mounting Accessories
Documentation: https://help.sonoff.tech/docs/SNZB02DR2
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