Description Portable ozone meter O3 0-5ppm range quick sensing tester multi-gas monitor air quality detector TVOC PM2.5 analyzer sensor Product Features 2.8 color liquid crystal display (LCD), 320x240 pixels User adjustable alarm threshold for O3 to alert user of elevated levels Test variables, temperature, humidity Large 1200mAh capacity lithium battery On-board fan to draw in ambient air for more accurate real-time results 5V Micro USB charging Low battery warning. This product is a multi-functional air quality detector that can detect total ozone (O3) volatile organic compounds (TVOC), particulate matter 2.5 microns in size (PM2.5 / 1.0 / 10), temperature and humidity, clock and recording Features. As a scientific air quality detection device, it combines multiple air sensors with built-in sensors. The fan can monitor ozone (O3), total volatile organic compounds (TVOC), PM2.5 /1.0 / 10, its digital The temperature and humidity on the LCD display. Product specifications Test content: O3+PM2.5+TVOC+Temperature+Humidity Display method2.8 LCD screen display, 320 x 240 pixels Sampling time1.5 seconds Power sourceLithium polymer battery with 1200 mAh capacity Detect gas:Ozone/Ozono/Ozon(O3) Detection range:0.000~5.000ppm Detection principle:Electrochemistry Response time:Diffusion 15S Duplicate value:2 % Resolution:0.001ppm Insulation resistance:20M Alarm function:Sound(2-3 beep) Alarm action value:0.3/0.6ppm (alarm on/off switchable) -Electrochemical sensor -TFT LCD screen display -320*240 pixels -Detection data range:O3(0.000-5.000ppm) -It can be used in office, indoor outdoor anddetection of ozone residue after disinfection. -24 hours real time monitoring -Power supply:Built in Li-battery 2000mAh -Material: ABS with TFT Screen -Color: Black+Orange -Size : 164*74*26MM Product weight500g Package includes 1xOzone Meter 1xuser manual 1xcharge cable