Tuya WiFi Temperature and Humidity Sensor Indoor Humidity Sensor Battery Powered APP Monitoring For Alexa Google Home Voice Product parameters for WIFI version: 1. APP name: Tuya Smart or Smart Life 2. Work with Alexa/Google Assistance 3. Built-in Battery: AAA1.5V*2 (Not include battery in the shipment) 4. Quiescent current: ≤30uA 5. Low-battery remind function 6. Low power undervoltage: ≤2.4V 7. WiFi: 802.11b/g/n, 2.4GHz 8. Support all Tuya smart product Linkage control 9. Working temperature: -10℃~55℃ 10. Working humidity: 10%~90%RH 11. Selectable temperature format ° C / ° F 12. Adjustable temperature/humidity report cycle/sensitivity/range 13. Temperature/Humidity high/low/release status will synchronization to app 14. Dimension: 70*25*21mm Users can remotely view temperature and humidity via smartphone using the app Tuya Smart or Smart Life. Users can choose 1 minute or 120 minutes to update the temperature and humidity via the app. The more frequent the update, the faster the battery will drain. Use AAA'2pcs, battery are not included. The battery life depends on the time interval as you choose usually it can last for several months if we choose 120 min to update.