Tuya Smart Multifunctional Intelligent Scenario Linkage Work With Voice Assistant Fast And Accurate Smart Sensor Description: Power supply：DC 5V, Type C Backup Battery：3xAAA Protocol：bluetooth5.0 Wireless Range：50m(ideal conditions) -Fi：Supports 2 4Ghz, 802.11 b/g/n Operating T emperature：-20℃~ 85℃ (-4°F~185°F) Operating Humidity：0% ~ 95% Temperature Accuracy：+0.3°C/ +0.5°F (typical) 0.5°C1 +0.9°F ( ) Humidity Accuracy：+2% (typical) +5%(max) Specifications: Smart -Fi Indoor Thermo-Hygrometer Remote Monitor Ambient Temperature and Humidity Anywhere, Anytime Connect via WiFi or BL三 can monitor Ambient Temperature and Humidity via APP anywhere Rreal-time notification alert at the instant an important change to the temperature or humidity occurs Data is displayed inside timestamped graphs by day、month、year, you can export all of the data into a CSV file for Excel and send by social App and email. Work with Voice Assistant Intelligent Scenario linkage Control condition and humidifier via Intelligent Scenario linkage function Fast and Accurate: Sensor ensures the accuracy of measurement. Monitor the Ambient Temperature and Humidity in Home, Greenhouse, Cigar Humidors,Wine Cellars,Server Room Can be used with Alexa and home Package Included: sensor*1