Feature 13 in 1 Design: This carbon dioxide detector has a 3 in 1 design with an infrared sensor to detect temperature, humidity and carbon dioxide. 2LCD Display: The portable mini CO2 detector has a LCD display, which is highly accurate display, easy to read, and can be manually calibrated. 3Compact and Portable: The 3 in 1 CO2 detector's small size makes it easy to carry as a decoration to check air quality anytime, anywhere. 4Large Capacity Battery: Digital CO2 meter adopts rechargeable battery, which can be used for 24 hours on a single charge and has a long service life. 5Multi Purpose: Suitable for home, school, office, tourism, indoor and outdoor, agricultural planting, production warehouse and other occasion.Item Type: Infrared Mini CO2 DetectorMaterial: ABS, PCSize: Approx. 73 x 73 x 18mm/2.9 x 2.9 x 0.7inDisplay: LCD DisplayPrep Time: About 35sRefresh Rate: About 2sCalibration: Manual CalibrationCO Concentration Measurement Range: 400-5000 ppm(50 ppm)Number Accuracy: (50 ppm+5%)Battery Capacity: 1000 mAh Li ion Battery (Included)Charging Method: USB Type CInput Voltage: DC5V 0.5AGross Weight: Approx. 113g/3.9oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Host1 x USB Cable1 x ManualNotePlease allow some errors due to manual measurement.