Product Details : ELO manufactures Converters to use in the vehicles which have 24V batteries , this voltage has to be converted into 12V in order to be able to use instruments requiring 12V supply voltage. This is the main purpose of a convertor. ELO is manufacturing 4 different types of convertors with various current ratings, for the fact that 12V instruments of different wattage will require different currents. Next to the fuse terminal, there is a led which indicates that the convertor is in operation. The led will go off if the fuse is broken. Trans Trade will be glad to furnish you with further documentation and samples.