Description
The SONOFF AirGuard E-Ink (SNZB-02UL) is a Zigbee temperature and humidity sensor from the SONOFF AirGuard Series with a 2.9-inch E-Ink display. Its nearly 180° viewing angle keeps readings clear even in bright places such as sunrooms and balconies.
Once paired, the screen shows temperature, humidity, time, date, weather and a comfort indicator. Press the button to see the last 6 hours of readings without a gateway or app, and view readings from other compatible sensors on the same screen. It runs on 2 AAA batteries for 8+ months with a gateway, or 15+ months standalone.
Note: time, date, weather, remote readings and app features need a SONOFF Zigbee gateway or Home Assistant (see "Works With" below).
Key Features
- 2.9" E-Ink display with a nearly 180° viewing angle, clear in bright light
- Shows temperature, humidity, time, date, weather and a comfort indicator
- 6-hour data recall on the screen at the press of a button, no gateway or app needed
- High accuracy: ±0.2°C / ±0.4°F and ±2% RH, with data refreshed every 5 seconds
- Remote Temperature & Humidity Source: view readings from other rooms on one screen
- Smart alerts and automations, including heating control based on real room temperature
- 6 months of environmental data in the app
- 2 × AAA batteries: 8+ months with a gateway, 15+ months standalone
- 4 placement options: desktop, built-in magnet, wall mounting or adhesive backing
- Works with Alexa and Google voice assistants, Apple Home via a Matter bridge, Home Assistant and Zigbee2MQTT
Works With
Technical Specifications
| Specification |
Details |
| Model |
SNZB-02UL |
| Product Series |
AirGuard Series |
| Product Name |
Zigbee Temperature Humidity Sensor |
| Wireless Protocol |
Zigbee (IEEE 802.15.4) |
| MCU |
TLSR8258 |
| Display |
2.9" E-Ink |
| Power Input |
3.0V ⎓ (2 × 1.5V LR03 AAA batteries) |
| Battery Life |
8+ months with gateway, 15+ months standalone |
| Temperature Accuracy |
±0.2°C / ±0.4°F |
| Humidity Accuracy |
±2% RH |
| Working Temperature |
0°C ~ 50°C |
| Working Humidity |
5% ~ 95% RH, non-condensing |
| Application Environment |
Indoor |
| Casing Material |
PC |
| Color |
White |
| Dimensions |
99.1 × 51.1 × 18.6 mm |
| Net Weight |
91.0 g (including batteries) |
| Certifications |
CE, FCC, RoHS |
Why Choose the SONOFF SNZB-02UL?
- A paper-like E-Ink screen that stays readable in bright sunlight
- Check the last 6 hours without opening an app
- See the climate of several rooms on one screen
- Long battery life on standard AAA batteries
Downloads
⬇ Download User Manual (PDF)
Warranty: 12-month warranty from the Official Distributor.
