Patent ID: 7193833

Claim:
An electric switch ( 1 ) comprising a capacity sensor circuit ( 2 ) provided with a signal input ( 3 ) arranged to be connected to an actuating line, and which is provided with a relay device ( 4 ) arranged to feed a current to a load line ( 7 ) from a power source ( 6 ) in response to a capacitive influence along said actuating line, wherein the signal input ( 3 ) is arranged to be connected to the load line ( 7 ) in such a manner that the load line will constitute said actuating line, characterized in that said power source is arranged to feed current to the capacity sensor circuit ( 2 ) which feeds internally generated pulses to the signal input ( 3 ) for a voltage division therein in response to momentary capacitance between the power source ( 6 ) and a load ( 5 ) to which the load line ( 7 ) is connected.