Wi-Fi Temperature & Humidity Sensor 1. Remote Control You can remotely view temperature humidity via smart phone using the app,tuyasmart or smart life. 2.Choose the time interval to update temperature or humidity.You can choose 1 min or 120min to update the temperature humidity via the app.the more frequent the update,the faster the battery will drain. 3. Temperature Unit Selection in APP You can choose or as the temperature unitthrough app. 4. Third-party Voice Control Works with amazon alexa, google assistant. 5.Battery Life Use AAA' 3pcs,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 120min to update.but the battery will last for only 2-5days if we choose 1min to update. 6.Time/Date Show time and date after connected with internet. 7.Muiltple connection User can use the app to add our device in smart life app in 3 ways.Bluetooth or wifi or hotspot Product parameter Size: 60*63*25mm Input voltage: DC4.5V LR03*3 Quiescent current: 30uA Low power undervoltage: 2.7V WiFi: 802.11b/g/n 2.4GHz Working temperature: -10~55 Working humidity: 10%~90%RH