Features: USB power supply: This temperature and humidity sensor can be powered through USB, making it convenient for users to use. You only need to connect it to a computer, mobile power supply, or other devices that support USB interfaces to achieve power supply.. WIFI connection: With WIFI function, you can wirelessly connect to your wireless networks, monitors and control through mobile applications or web page, providing a more convenient operating experience. Temperature and humidity monitoring: Sensors can accurately measure the temperature and humidity of the environment, and transmit data to mobile phones or computers, helping you understand the indoor temperature and humidity conditions in actual time. High precisions measurement: The temperature and humidity sensor adopts advanced sensing technology, visible at night, which can provide high-precisions temperature and humidity measurement results, ensuring the accuracy of data. Occasion: Suitable for families, it can be placed in bedrooms, living rooms, kitchens, etc. to monitoring changes in indoor temperature and humidity, helping you create a comfortable living environment. It can also be used in offices, meeting rooms, laboratories, and other place to ensure employee work efficiency and comfort. Specifications: Material: Plastic Type: Sensor only, Sensor with cable(optional) Screen: 2.9-inch LCD Display Display Function: Temperature, humidity, brightness, time, date Battery: 500mA Working Time: fully charge about 5hrs Power Supply: USB Powered Easy Installation: put it on the desk, or gang it on the wall Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1x Sensor or 1x Sensor with Temperature Control Line(optional)