The panel monitors the fresh water, waste water and faecal tanks, as well as the on-board and starter batteries. It has a main switch for the on-board battery and a pump main switch for the fresh water supply. The voltage indicator on the left side of the panel is used to monitor the on-board and starter battery. The illuminated dot display provides a fairly accurate indication of the battery voltages. The board or starter battery voltage can be selected or the display switched off at the push of a button. At low battery voltages, red indicators indicate that the battery is about to be recharged. The filling levels of the tanks are displayed in three colours with illuminated bars. The displays are infinitely variable. When refuelling or defuelling the containers, the continuously rising or falling display provides the user with a direct image of the current filling level. Fuel gauge on the right side can be switched to two additional measuring inputs (e.g. waste water and faecal tank) as standard. 24V version