For storage heaters with electronic DC charging controller. 'Home station' for controlling individual heating groups in conjunction with a DC central control unit, adjuster for raising or lowering the charging, characteristic curve switching for reduced operation externally, charging level in reduced operation (0 - 100%) adjustable, reference variable DC 0.91 to 1.43 V, top hat rail mounting - 3 division units, protection class IP 20 with appropriate mounting, direct voltage 0.91 to 1.43 V.
