Details 1. Integrated sensors can accurately detect carbon dioxide, temperature, and humidity in the air. 2. Featuring a large - screen design for clear and easy reading. 3. The carbon dioxide detection range is from 400 ppm to 5000 ppm, with an accuracy of 1 ppm. 4. It is easy to use. Press and hold the on/off button for 3 seconds to turn it on. 5. This portable air detector can help monitor the air quality at home. 6. It is especially suitable for families with infants, children, and pregnant women. Product Features 1. Material: ABS and PC 2. Input: DC 5V 3. Sensors: Infrared detection; TVOC sensor (optional) 4. Colors: Black; White (optional) 5. Detection range: 400 - 5000 ppm 6. Measurement accuracy: 1 ppm 7. Display: LED digital display + LCD screen + backlight 8. Battery: 3.7 V / 1200 mAh lithium battery 9. Applicable temperature: 0 - 50℃ Package List 1. One carbon dioxide detector 2. One USB cable 3. One user manual