Method for configuring a two-pole electrical input (100; 210), 1.1 wherein the electrical input (100; 210) is provided with at least the following means: 1.1.1 with means for measuring an electrical voltage and an electrical current at the two-pole input (100; 210); and 1.1.2 with a controller (140; 240) for controlling the means for measuring; the method comprising the steps of: 1.2 applying an electrical input signal (In) to the two-pole electrical input (100; 210); 1.3 determining (140; 240) whether the input signal (In) is from an electrical voltage source or from an electrical current source or from an electrical resistor or from an electrical switch; 1.4 for which purpose at least one measurement (320; 420; 520; 610; 616, 630, 636) is carried out on the two-pole input (100; 210) with the aid of the controller (140; 240) and the means for measuring; 1.5 adapting (350; 440, 450; 540; 550; 560; 614, 620, 634, 640) the two-pole electrical input (100; 210) to the determined source of the input signal (In); characterized in 1.6 that, in a first step, after applying an electrical input signal (In) to the two-pole electrical input (100; 210), the controller (140; 240) performs a first voltage measurement with the means for measuring an electrical voltage; 1.7 that, in a second step, the controller (140; 240) checks (330, 340) that the result of the first voltage measurement is greater than a positive minimum voltage and less than or equal to a maximum voltage which is greater than the minimum voltage; 1.8 that, in a third step, in the event of a positive result of the check in step 1.7, the controller (140; 240) carries out a second voltage measurement using the means for measuring an electrical voltage; 1.8.1 where, for the second voltage measurement, a resistance is used which is smaller than a resistance used for the first voltage measurement; 1.9 that, in a fourth step, the controller (140; 240) checks that the result of the second voltage measurement is greater than or equal to the result of the first voltage measurement; 1.10 where, in a fifth step, in the event of a negative result of the check in step 1.9, the controller (140; 240) adapts (350; 450; 550; 634) the two-pole electrical input (100; 210) to the input signal (In) by switching on and/or leaving switched on the means for measuring an electrical current; or 1.11 where, in a fifth step, in the event of a positive result of the check in step 1.9, the controller (140; 240) adapts (440; 540; 614) the two-pole electrical input (100; 210) to the input signal (In) by switching on the means for measuring an electrical voltage. 1.1.1 with means for measuring an electrical voltage and an electrical current at the two-pole input (100; 210); and 1.1.2 with a controller (140; 240) for controlling the means for measuring; 1.2 applying an electrical input signal (In) to the two-pole electrical input (100; 210); 1.3 determining (140; 240) whether the input signal (In) is from an electrical voltage source or from an electrical current source or from an electrical resistor or from an electrical switch; 1.4 for which purpose at least one measurement (320; 420; 520; 610; 616, 630, 636) is carried out on the two-pole input (100; 210) with the aid of the controller (140; 240) and the means for measuring; 1.5 adapting (350; 440, 450; 540; 550; 560; 614, 620, 634, 640) the two-pole electrical input (100; 210) to the determined source of the input signal (In); 1.6 that, in a first step, after applying an electrical input signal (In) to the two-pole electrical input (100; 210), the controller (140; 240) performs a first voltage measurement with the means for measuring an electrical voltage; 1.7 that, in a second step, the controller (140; 240) checks (330, 340) that the result of the first voltage measurement is greater than a positive minimum voltage and less than or equal to a maximum voltage which is greater than the minimum voltage; 1.8 that, in a third step, in the event of a positive result of the check in step 1.7, the controller (140; 240) carries out a second voltage measurement using the means for measuring an electrical voltage; 1.8.1 where, for the second voltage measurement, a resistance is used which is smaller than a resistance used for the first voltage measurement; 1.9 that, in a fourth step, the controller (140; 240) checks that the result of the second voltage measurement is greater than or equal to the result of the first voltage measurement; 1.10 where, in a fifth step, in the event of a negative result of the check in step 1.9, the controller (140; 240) adapts (350; 450; 550; 634) the two-pole electrical input (100; 210) to the input signal (In) by switching on and/or leaving switched on the means for measuring an electrical current; or 1.11 where, in a fifth step, in the event of a positive result of the check in step 1.9, the controller (140; 240) adapts (440; 540; 614) the two-pole electrical input (100; 210) to the input signal (In) by switching on the means for measuring an electrical voltage.