Fangrui Product Details Temperature And Humidity Technical Indicators. When Low Battery Icon Is Displayed, The Device Needs To Be Charged. Insert The Included Or Another Compatible Micro-usb Charging Cable Into The Device. Attach The Other End To A Usb Dc Charger (such As A Smart Phone Charger) That Outputs Dc 5v At Greater Than =1000ma. Fully Charge For At Least 2-3 Hours Before Use. Avoid Charging With A Usb Computer Port Which Only Outputs 500ma. Display Method: 3.5 Inch Lcd Display Atmospheric Pressure: 86kpa - 106kpa Detection Method For O3: Electrochemistry Sampling Time: 1.5 Seconds Product Size: 130*80*30mm Detection Temperature: -10c To 50c; Relative Humidity: - Storage Temperature: -10c To 60c; Concentration Unit For O3:ppm Power Source: Lithium Battery With 2000mah Capacity; 5v Dc Power Charging Via Micro-usb Port Product Weight: 160g This Product Is An Air Quality Monitor That Detects Ozone, Temperature, And Humidity. It Combines Sensors Real-time Monitoring Of Ozone(o3),temperature, And Humidity On