There are many manufacturers of 12-volt control panels such as Zig, CBE, Sargent and Bonus / Plug-in Systems, to name just a small selection. All have different features and come in various styles, so it’s a matter of personal choice. One thing to consider when purchasing your chosen unit is that it should have a battery charge status display, a light switch, a water pump switch, and, if you plan to install an extra appliance, an auxiliary switch.