【App and Voice Control】Download the free App "Smart Life" from App store and Google play, control and check the temperature and humidity anytime anywhere; Through the mobile phone APP, you can use it with other smart devices to create your own smart scene; The sensor is connected to the APP (smart life/TUYA smart) to automatically synchronize the time of the mobile phone. Also it works with Amazon Alexa and google assistant, can use simple voice commands to control the device; 【Real-time monitoring and recording】The sensor uses USB power supply. Compared with the battery version, the sensor will monitor the temperature and humidity in real time. You can view the changes in the value on the APP or display screen. Record the temperature and humidity changes on the APP, and use the graphics to show you, (Note: After configuration and activated at the first time, it will take around 30 minutes to detect and show the real temperature and humidity) 【 BlackLight Supported】 When the object passes by the infrared sensing window from a distance of 5cm, the screen will light up for about 10s; High-quality and clear LCD display, giving you the best visual experience 【Scene linkage】High-precision and real-time monitoring help you complete different linkage strategies. For example, if the temperature reaches 32.6 degrees Celsius, than turn on the air conditioner through our universal remote control. Or turn on the humidifier when the humidity is less than a certain value. 【Easy to Use and Install】You could use the built-in bracket and place it directly on the desktop or use the hook and hang it on the wall (the hook is included in the package);