The 24V DC ->12V DC "Step-Down-Converter" incl. metal housing (aluminum) with connection cable and cinch plug converts the voltage of a 24V DC voltage source into a 12V DC voltage. So it is possible to use the HeizteufelTM heating clothing also with 24V DC voltage sources (e.g. E-wheelchair). The aluminum housing ensures good heat dissipation / corrosion resistance and with the two 5mm holes, the converter can also be permanently installed.