This instrument is aimed to be installed in a panel board, on a DIN rail. Voltmeters measure the potential (voltage) difference of an electric circuit in volts. The scale of the dial is from 0 to 500V. Accuracy class 1.5. Complient with standards IEC 60051-1, IEC 61010-1 and IEC 61000-4. The dimensions of the product are 96mm in width or 8 9mm modules, 96mm in heigh and 77mm in depth.