Sonoff AirGuard Temperature & Humidity Sensor with Display – Zigbee (SNZB-02DR2)
Sonoff AirGuard Temperature & Humidity Sensor with Display – Zigbee (SNZB-02DR2)
Smart Temperature & Humidity Monitoring with Large 3.6" Display
Keep a close eye on your indoor environment, greenhouse, grow room or workspace with the Sonoff AirGuard SNZB-02DR2. Featuring a large, easy-to-read 3.6-inch LCD display, this Zigbee temperature and humidity sensor gives you essential climate information at a glance.
Beyond basic temperature and humidity readings, the AirGuard provides dew point, VPD (Vapour Pressure Deficit) information and 24-hour high/low records, making it particularly useful for environments where precise climate control matters.
Perfect for Smart Climate Control
When connected to a compatible Sonoff Zigbee hub, the SNZB-02DR2 can form part of your smart automation system.
Use temperature and humidity readings to trigger devices such as:
- 🌱 Greenhouse ventilation
- 💧 Humidifiers and dehumidifiers
- ❄️ Air conditioners
- 🔥 Heaters
- 🌀 Fans and extraction systems
For growers, VPD monitoring provides an additional way to understand the relationship between temperature and humidity and optimise the growing environment.
Monitor Multiple Locations from One Display
The AirGuard can display readings from compatible remote Sonoff sensors, allowing you to monitor different areas without needing a separate display for each location.
Compatible sensors include SNZB-02, SNZB-02P, SNZB-02D, SNZB-02WD and SNZB-02LD.
Through the eWeLink App, you can also access historical environmental data and monitor changes over time.
Which AirGuard is Right for You?
Sonoff offers different AirGuard monitoring solutions depending on what you want to measure:
🌡️ Temperature & Humidity – SNZB-02DR2
Ideal for greenhouses, grow rooms, homes and offices where temperature, humidity and VPD are important.
💨 CO₂ Monitor – SAWF-08P
Designed to monitor carbon dioxide levels and help identify poorly ventilated or stuffy spaces.
🌫️ Air Quality Monitor – SAWF-07P
Monitors fine particulate matter such as PM2.5 and PM10, making it useful for monitoring dust, smoke and general particulate air quality.
Key Features
- 3.6" large LCD display
- Real-time temperature & humidity monitoring
- VPD and dew point information
- 24-hour temperature & humidity highs and lows
- Up to 6 months of historical data through the eWeLink App
- Adjustable reporting intervals
- Supports additional remote Sonoff sensors
- Zigbee connectivity
- Can be used in smart automation scenes
- Suitable for homes, offices, greenhouses and grow environments
- Low-power operation
Product Specifications
| Specification | Details |
|---|---|
| Model | SNZB-02DR2 |
| Connectivity | Zigbee (IEEE 802.15.4) |
| MCU | TLSR8656F512ET32 |
| Display | 3.6" LCD |
| Measurements | Temperature & Humidity |
| Additional Data | Dew Point, VPD, 24-hour High/Low |
| Data History | Up to 6 months via eWeLink App |
| Reporting Interval | Adjustable |
| Remote Sensors | SNZB-02 / 02P / 02WD / 02D / 02LD |
| Operating Temperature | -20°C to 60°C |
| Operating Humidity | 5%–95% RH, non-condensing |
| Material | PC + ABS |
| Certifications | CE, FCC, RoHS |
| FCC ID | 2APN5-SNZB02DR2 |
Size & Weight
Dimensions: 95 × 70 × 18.2 mm
Net Weight: 99.3 g
Important
A Sonoff Zigbee hub/bridge is required for Zigbee connectivity and smart-home automation features.
For greenhouse and indoor growing applications, this is particularly useful because temperature, humidity and VPD can all be monitored from one compact display and incorporated into automated climate-control routines.