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 LED display is composed by 3 digits and indicate voltage from 0 to 600V AC. 0.5% of measurement accuracy at full scale. Complient with standards IEC/EN 61010-1. The dimensions of the product are 36mm in width or 4 9mm modules, 87mm in heigh and 65mm in depth.