SONOFF SNZB-02D ZigBee 3.0 Sensor LCD Screen Smart Temperature Humidity Sensor Works for Alexa Google Home •[Remote real-time monitoring] The SNZB-02D sensor will monitor the temperature and humidity remotely on the APP,or in real time on the display,with a coverage of up to 120 meters/400 feet •[High Accuracy and 5s Quick Refresh] Built-in high grade smart hygrometer sensor for more accurate readings,maintains 0.2℃/0.4℉ temperature accuracy and 2%RH humidity accuracy,refreshes readings every 5 seconds •[Large LCD Display] Use the large LCD display to view the real-time values of temperature and humidity clearly and dynamically,and the intuitive display icons make it easier for you to view room conditions and battery status •[App Notification] When the temperature or humidity exceeds your set comfort level,you will receive an instant reminder from your phone •[Data storage and export] Free cloud storage for up to half a year,the most accurate enough to view hourly data,you can also view the highest and lowest values for any hour or day,and the data can be exported as a file •Specification: •Battery type: CR2450 (included) •Capacity: 600mAh •Voltage: 3V Package included: •1 x Smart Temperature Humidity Sensor •1 x English and Chinese User Manual •Other items not include