Description Features: 1. Three-in-one function: The detector can detect carbon dioxide, temperature and humidity. It can be used directly by connecting the USB cable. 2. Real-time monitoring and display: The desktop CO2 detector has real-time monitoring and real-time display of the concentration of carbon dioxide per m. 3. Helping to understand the environment: It can detect and display the temperature and humidity of the environment to help users understand the environment. 5. Small size: The detector is small and portable, easy to carry, does not take up too much space, and can be installed at home. 5. Easy to identify and read: The display of the detector adopts intelligent color display and clear numbers, which is easy to identify and read. Description: This air quality detector can help you detect air quality and protect the health of you and your family. Specifications: Model: 2CO1T Size: 70*35*88mm Charging: USB charging Display method: 2.8 inch LCD screen display, 240*320 pixels CO2 Technology: infrared (NDIR) Temperature and Humidity sensor: Detection range: CO2 (0-6000 ppm) Sampling time: 1.5 seconds Detection temperature: -10C to 70C; Relative humidity: 10%-99% Storage temperature: -10C to 60C; Concentration unit for HCHO and TVOC: mg/m Power source: Lithium battery 1500 mAh, 5V DC Package Included: 1* Carbon dioxide detector 1* USB charging cable 1* Manual Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.