Item Type: Formaldehyde TesterMaterial: ABSBattery: 2 x AA battery(not include) .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; } 1A VARIETY OF DETECTION: Guarantees accurate and wide measurement, at the same time, layers of fine filter to catch formaldehyde molecules, can detect a variety of harmful gases, care for your family health 2HD ACCURATE: HD LED display, professional grade formaldehyde sensor algorithm, intelligent calibration, interference resistant, accurate detection, quick response to complex air environment 3WITH CONVECTION HOLE: 3D convection hole design, close to the sensor multi sided opening, more accurate convection detection during air circulation 4WITH ALARM: Equipped with formaldehyde, TVOC detection module, can real time display per cubic meter formaldehyde concentration, TVOC content, no need to stare at the machine value, air pollution once exceeded will immediate alarm 5EASY TO USE: AI intelligent assessment of air quality harm degree, do not worry about reading, the elderly and children can also use, at any time to detect air quality, indoor formaldehyde detection, to ensure the health of the elderly and children