Features 1、【High Accuracy】: Premium-quality sensors ensure high accuracy of measurement data, with high sensitivity, ultra-low power consumption, one-button refresh, fast response. You need to connect with Bluetooth gateway to realize remote viewing of temperature and humidity. 2、【Large Screen Display /u0026 Backlight】: It is equipped with a large digital display that allows you to view temperature, humidity, and remaining batterylife clearly on the screen, even at night. Using a large screen narrow border design , the display content is diverse , the digital display is clearer , at a glance , and can be seen clearly from a distance 3、【Maximum / Minimum Values Display】Display the temperature and humidity maximum / minimum values, intuitively feel the recent temperature and humidity changes , and provide conservation for the health of the family 4、【Scene Linkage】: It can be used as a temperature and humidity data source, and a lot of automation can be done according to the data source. Support custom scene setting, you can preset the alarm value of temperature and humidity in APP, when the test value reaches the alarm value, APP will push the alarm. 5、【Temperature and humidity history】You can view the historical data graph of temperature and humidity on the app and export the data to your mailbox. 6、【Voice Function】Supports Alexa , and other smart speaker. You can enquire about the indoor temperature and humidity by speaking to the smart speaker. 7、【Low Power Consumption Ultra-Long Standby】Powered by 3PCS AAA Alkaline batteries(not included) , which is super power-saving and long-term standby 8、【Wide Applications】: It can help accurate monitoring indoor temperature and humidity, creating a comfortable living environment no matter the weather is hot in summer or cold in winter. Suitable for bedrooms, dressing rooms, fruit stores, greenhouses, hatcheries, laboratories, machine rooms, warehouses, cellars, etc. Specification Package List 1 * Temperature and Humidity Sensor 1 * User Manual (English)