The present invention refers to a window-blinding device 1 with a 20-wheel control, comprising at least one brake unit 26 with a brake MOSFET switch M2. The braking unit 26 is configured in such a way that, after disconnecting the control switch 20 from an electrical energy supply 16, it initiates an electrical energy in the control circuit 20 into the engine unit 18 in the opposite direction, compared to its original direction of operation, in order to brake their current movement. In addition, the present invention refers to an appropriate tax system 20,on a vehicle fitted with such a windscreen visor 1 or control switch 20 and on different procedures for operating such a window visor 1.
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