Overview: This sensor can display the real-time detected temperature and humidity. You can remotely monitor through your mobile phone Tuya Smart/Smart Life APP. Suitable for bedroom, baby room, basement, office, school, supermarket, warehouse, etc. Features: It detects the current temperature and humidity around environment. Fahrenheit ( Fahrenheit ) and Celsius ( celsius ) measuring units are switchable. You can remotely view temperature & humidity via smart phone APP - Tuya Smart or Smart Life. Supports multiple connection modes - WiFi, BT, hotspot. 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. If the current temperature/humidity exceeds the set temperature/humidity, the sensor will automatically alarm and the APP will push the message. Supports voice control. Compatible with alexa/Google Home. Also, it supports intelligent linkage by using APP to create scene. Note: Powered by 3*LR03 batteries (NOT included). The battery life depends on the time interval as you choose. Specifications: Input Voltage: 3 * DC1.5V LR03 (NOT included) Quiescent Current: less than 30uA Low Power Undervoltage: less than 2.7V WiFi: 802.11b/g/n, 2.4GHz Working Temperature: -10 celsius 55 celsius Working Humidity: 10percent 90percent RH Material: ABS Color: Black, White (Optional) Size: 7.5*7.5*4.5cm Weight: 85g Packing List: 1 * Temperature Humidity Sensor