SONOFF SNZB-02P ZigBee Temperature and Humidity Sensor •High Precision and Rapid Refresh: Utilizes a Swiss-made smart hygrometer sensor for temperature accuracy up to ±0.2°C/±0.4°F and humidity within ±2%RH. Data measurements refresh every 5 seconds, providing you with the latest changes in temperature and humidity •Zigbee 3.0 Compatibility: Supports Zigbee gateways using the Zigbee 2.0 protocol, including SONOFF iHost, NSPanel Pro, ZB Bridge Pro, and ZBDongle-E. Theoretically compatible with any Zigbee 3.0-developed gateway, such as Echo 4th Gen, SmartThings hub V3 •Comfort Alerts: Instant notifications on your smartphone when room temperature or humidity exceeds your set comfort range, helping you maintain a comfortable living environment and ensuring quality of life •Data Storage and Export: Offers up to six months of free cloud storage. Easily access daily, monthly, or bi-annual temperature and humidity changes through real-time queries and export data as needed •4-Year Battery Life: Powered by a 1000mAh 3V CR2477 battery, with battery life data derived from SONOFF's internal lab testing. Actual usage may vary Specifications: •Model: SNZB-02P •Wireless connection: Zigbee 3.0 •Battery model: CR2477 •Casing material: PC •Working temperature: -10℃ ~ 60℃ •Product dimension: 45 x 45 x 1 7.7mm Package included: •1 x Smart Sensor •1 x Screw •2 x Installation Base •1 x English and Chinese Manual •Other items not included