SpecificationProduct nameOzone MeterFunctionDetect O3/Ozone/Ozono/Ozon/Temperature/HumidityDisplay method2.8 LCD screen display, 320 x 240 pixelsSampling time1.5 secondsPower sourceLithium polymer battery with 2000 mAh capacityDetect gas:Ozone/Ozono/Ozon(O3)Detection range:0.000~5.000ppmDetection principle:ElectrochemistryResponse time:Diffusion 15SDuplicate value:2 %Resolution:0.001ppmInsulation resistance:20MAlarm function:Sound(2-3 beep)Alarm action value:0.3/0.6ppm (alarm on/off switchable)Test content: O3+AQI+Temperature+Humidity-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 and detection 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*26MMProduct weight500gElectrochemistry sensor for O3. Temperature and Humidity sensor. AQI for ozone concentration index. Support time and date,self-calibration function.O3 concentration AQI:0~0.100-----Good0.100~0.300-----Slight0.300~1.000-----Monderate1.000~4.999-----SeriousFeatures2.8" color liquid crystal display (LCD), 320x240 pixels User adjustable alarm threshold for O3 to alert user of elevated levels Test variables, temperature, humidity Large 2000mAh capacity lithium battery On-board fan to draw in ambient air for more accurate real-time results 5V Micro USB charging Low battery warning.Product includes1 x Ozone Meter