The LCD voltmeter S displays either the voltage of the on-board battery or the starter battery. The voltages are displayed as precise numerical values. The additional bar display operates in the range from 10.5 to 15 volts and thus clearly shows the most interesting range of battery voltage from deep discharge to maximum charging voltage at a glance. When installing the device, this function is set once to 12V or 24V operation. In 24V operation, the range then corresponds to 21.0 to 30.0 volts. Mixed operation of e.g. 24V starter circuit and 12V supply circuit is also possible, as this setting is made separately for the starter and on-board battery. The connection is made via screw terminals on the rear of the device. Matching the VOTRONIC module system, the LCD voltmeter S fits in with the other display modules both visually and mechanically (standardised height 85 mm) and the low installation depth of just 22 mm allows installation in almost any location. If required, the display can be backlit in white (switchable) and is also very easy to read from greater distances and in all lighting conditions.