Description : Made of high quality plastic material , durable and sturdy These DC Panel Voltmeter is specially designed for measuring and monitoring battery and electrical system Clear and easy to read scale and a button for fine tuning the dial Panel Voltmeter measures voltage range with accuracy of Class 2 . 5 Simple and convenient wiring , embedded installation Specification : Material : plastic Accuracy : class 2 . 5 Insulation resistance : 20MOmega / DC500V Damping time : 4s Conditions of use : - 20 40 , Relative humidity 85 % Storage temperature : - 40 70 Insulation strength : AC voltage 50Hz , 2KV for 1 minute . Meter overall size : approx . 63x56x58mm Package Includes : 1 Piece DC Analog Panel Voltage Meter Note : Color might be slightly different due to the color calibration of each individual monitor . Please allow slightly measuring deviation due to manual measurement .