DescriptionBrand Name : EARUELETRICDIY Supplies : ELECTRICALOrigin : Mainland ChinaOperating Temperature : T90Accuracy Class : 1%Display Type : Digital OnlyPower Supply : ACCertification : CE,NONEModel Number : AD16-22DSVVoltmeterLighting Source: LED;Color of lamps: R-red, Y-yellow, G-green, B-Blue, W- WhiteVolt.: 12V--500V;Nature of supply: AC ;Rated Temp : T90;Life of continuous working: Typically over 30,000 hours. The end of life for a lamp is not usually a sudden failure;3. Main technical parametersEnvironmental Temperature: -25+55;Working under vibration frequency 2-80Hz,acceleration at 0.7g;Relative Air Humidity: 98%;Pollution rank is three grade and installation category is III;Protection Degree: Head IP65Voltage of working frequency: 2.5kV (AC valid value), 1min;Leakage Index: CT1100;Frequency: AC 50-60HzError 1%