- 2.8 inch color LCD display with 320 x 240 pixels and a user adjustable O3 alarm threshold to alert when ozone concentrations rise. - Versatile applications: suitable for detecting ozone residues in offices, indoor and outdoor environments, and after disinfection. - Power and charging: 2000 mAh lithium battery with USB charging and a low battery warning for continuous monitoring. - Real time accuracy: integrated fan draws ambient air for immediate, representative ozone measurements. - Use scenario 1: monitor an office space after ozone-based cleaning to verify safe conditions before occupancy. - Use scenario 2: in clinics or laboratories following disinfection to confirm ozone residues have dissipated. - Use scenario 3: assess outdoor or facility areas near ozone generating equipment to understand ambient ozone exposure.