SONOFF AirGuard TH SNZB-02DR2 ZigBee LCD Temperature and Humidity Sensor

The SONOFF AirGuard TH SNZB-02DR2 is a smart ZigBee temperature and humidity sensor featuring a large 3.6-inch LCD display. It provides real-time monitoring of temperature, humidity, daily min/max values, and air comfort level with laboratory-grade precision (±0.2°C / ±2% RH). Powered by a CR2450 battery and using ZigBee 3.0 wireless technology, it integrates seamlessly into smart home systems via the eWeLink app when connected to a compatible ZigBee hub.

Advantages

Clear, large LCD screen shows all key data at a glance without needing a phone. High-accuracy Sensirion SHT40 sensor ensures reliable readings for better comfort and health. Low-power design offers up to one year of battery life. Compact and versatile mounting options (desktop or wall-mount) make it suitable for any room.

Suitable for

• Home climate monitoring (living room, bedroom, nursery)
• Greenhouses, wine cellars, and storage areas
• Office and workspace environment control
• Integration with smart home automation systems

Key specifications

• Sensor: Temperature and humidity (Sensirion SHT40)
• Display: 3.6-inch LCD
• Temperature range: -9.9°C to 60°C (14.2°F to 140°F)
• Humidity range: 0% to 99% RH
• Accuracy: ±0.2°C temperature, ±2% RH humidity
• Wireless: ZigBee 3.0 (IEEE 802.15.4)
• Power: 1x CR2450 3V lithium battery
• Battery life: Up to 1 year (typical)
• Material: PC + ABS
• Certifications: CE, FCC, RoHS

Recommendations

For full smart functionality, pair with a SONOFF ZigBee Bridge or any ZigBee 3.0 compatible gateway. The eWeLink app enables remote monitoring and automation rules. Ideal for maintaining optimal indoor climate conditions.