SONOFF Zigbee Temperature and Humidity Sensor The SONOFF SNZB-02P Zigbee Temperature and Humidity Sensor provides environmental readings with an accuracy of ±0.2 °C for temperature and ±2% for relative humidity, updating every 5 seconds for near-real-time monitoring. Compatible with Zigbee 3.0 hubs, including SONOFF iHost, NSPanel Pro, ZB Bridge Pro, ZBDongle-E, and third-party hubs such as the 4th-generation Echo and SmartThings. You’ll receive instant notifications when conditions exceed your preset range. Access up to 6 months of cloud-based historical data with easy export options. Powered by a CR2477 battery for up to 4 years of reliable performance. Precision Sensor & Fast Updates Equipped with a Swiss-made hygrometer sensor with a temperature accuracy of ±0.2 °C / ±0.4 °F and a relative humidity accuracy of ±2%. Data is updated every 5 seconds, providing you with near-real-time updates on environmental conditions. Zigbee 3.0 Compatibility Works seamlessly with Zigbee 3.0 hubs such as SONOFF iHost, NSPanel Pro, ZB Bridge Pro, and ZBDongle-E. Also compatible with third-party Zigbee 3.0 hubs such as the 4th-generation Echo and SmartThings Hub V3. Instant Comfort Alerts You’ll receive an instant notification on your phone if the temperature or humidity exceeds your preset comfort thresholds. This helps you create a healthier and more comfortable living space. Cloud History and Exportable Data Includes up to 6 months of free cloud storage. View historical trends by day, month, or half-year, and effortlessly export detailed temperature and humidity logs. Long Battery Life Powered by a CR2477 button-cell battery, it offers a battery life of up to 4 years under typical usage conditions (based on SONOFF lab data; actual performance may vary).