SONOFF SNZB-02B AirGuard TH Lite Zigbee Temperature Humidity Sensor, Thermometer Hygrometer with App Alert, Remote Monitoring for Greenhouse Cigar Humidor, Works Alexa & Google Home, 4-Pack

Zigbee 3.0 & Home Assistant: Requires a Zigbee hub. Works with SONOFF gateways, Echo (4th Gen), SmartThings, and Home Assistant via Zigbee2MQTT/ZHA for easy smart home integration and automation. High Precision & Fast Refresh: Built-in Swiss professional-grade sensor, delivering temperature accuracy of ±0,2 °C and humidity accuracy of ±2% RH. Updates every 5 seconds for real-time. Environmental Monitoring: Monitors temperature, humidity, air pressure, and calculated dew point and VPD. Its compact, ultra-slim design fits easily into tight spaces such as guitar cases, reptile terrariums, and other confined areas. Long Battery Life: Powered by standard AAA batteries for easy replacement, offering up to 2 years of battery life. Ideal for hard-to-reach installations like attics or storage cabinets, eliminating the hassle of frequent recharging. Comfort Alerts: Customize temperature and humidity thresholds and receive instant app alerts when values exceed your settings. Supports smart scene automation with smart plugs to control fans, humidifiers, and other devices automatically. Note: After pairing, we recommend updating the device to firmware V1.0.7 or later.