Features: 1. High temperature and low temperature alarm Once the set temperature value is exceeded, the mobile phone will alarm 2. High humidity and low humidity alarm Once the set humidity value is exceeded, the mobile phone will alarm 3. Real-time monitoring. Powered by AAA1.5Vx3 battery (battery not included), low power consumption, can be used for about 1 year under system default settings. The data update frequency is 1-120 minutes, and the update frequency can be selected as needed. The smaller the value, the shorter the actual battery life. 4. Temperature and humidity curve Record temperature and humidity changes on the APP and present them with graphs. It is more intuitive to notify you of the latest data changes 5. A variety of installation methods It can be placed directly on the table or hung on the wall. It's more convenient and beautiful without the data cable 6. LCD screen The sensor uses the LCD screen as the temperature and humidity display, and adds the time and date display on the screen. The time and date are automatically calibrated. 7. Scene Link The sensor can be used as a temperature and humidity data source for Tuya Smart, Smart Life, Amazon Alexa and Google Home. You can perform many automated processes based on data sources. Note that this function must be used with a universal infrared remote control. 8. Temperature unit switch The sensor is designed with Celsius and Fahrenheit temperature display conversion. You can select the units you want to display according to your needs. The switching speed is related to the set data update rate. You can select the update frequency for one minute first, then switch the temperature to the new unit after one minute, then switch the data update frequency to the time you need. 9. Third-party voice support. The sensor supports Amazon Alexa, Google Home Assistant. You can check the current temperature and humidity by voice. Product Parameters: Size: 60x63x25mm Power: AAA1. 5Vx3 (battery not included) Wi-Fi support: 2.4G IEEE 802.11 b/g/n Temperature measurement range: -10- 55 Temperature accuracy: 0.3 Humidity measurement range: 0 percent - 99 percent RH Temperature accuracy humidity: 0.3 percent RH