Abstract: The invention relates to a surface heating element comprising a fabric, which has electrically conductive and electrically non-conductive threads. Several electrically conductive threads are joined together to a heating strip, in which case different heating strips can be wired in any chosen way. Moreover, the invention relates to a method for producing such a surface heating element.

Abstract: A programmable regulating device, preferably for the regulation of a heating, ventilation and/or air conditioning installation, is disclosed. The inventive device illustratively comprises a microprocessor, a program and data memory and a service panel which includes a label, selection keys, edit key and display. The contents of the label are variable. A plurality of service cards are assigned to the service panel. Each service card is provided with a number of display lines equal to the number of lines in the label and supports a machine-readable encoding field comprising one or more markings. The service panel is provided with a reading unit by means of which all existing markings can be read. The encoding field of each service card is differentiated by the number and/or varying arrangement of markings, so that the microprocessor is informed through the reading unit and the encoding field as to which service card has been assigned to the reading unit.