Description:For detection HCHO, TVOC.Compensate the calibration while reducing interference, ensuring the accuracy of each data.3D convection vents for real-time circulating convection of air and more accurate detection.Rating evaluation for a more intuitive analysis of air quality index.Compact and portable, with a wide range of inspections.Adopt dry battery protection technology, adopt advanced voltage stabilizing circuit, automatic power saving mode, long standby time.Suitable for home, office, school and other places as well as in the car.The actual product does not contain batteries, only the air detector.Specification:Material: ABSColor: WhiteSize: 120x55cmDisplay mode: LED digital displayTest items: Formaldehyde and TVOCDetection range: 0.000-2.888mg/m (formaldehyde); 0.000-9.999mg/m (TVOC)Note:1. Due to the light and screen difference, the item&39;s color may be slightly different from the pictures.2. Please allow 1-2 cm differences due to manual measurement.Package included:1pc x Air Quality DetectorThe actual product does not contain the battery, please buy it yourself.