4-fold impulse switch with integrated relay function, also for central control and group control. With 4 independent contacts. Standby loss 0.03–0.4 watt only. To achieve this, simply connect the N conductor to the terminal (N) and the phase conductors to 1(L), 3(L) or 5(L). This results in an additional standby consumption of only 0.1 watt. If the channels are used to control switchgear that has no zero passage switching, (N) should not be connected, otherwise the additional off-delay would have the opposite effect. Local universal control voltage 8 to 230V UC. In addition universal control inputs central ON and central OFF for 8 to 230V UC, electrically isolated from the local inputs. With additional group control inputs ON and OFF for 8..230V UC. Same potential like the local control inputs. Groups of these impulse switches can be controlled separately using the group control inputs. Supply voltage like the local control voltage. By using a bistable relay coil power loss and heating is avoided even in the on mode. The switched consumers may not be connected to the mains before the short automatic synchronisation after installation has terminated. Central commands always have priority, ­local control inputs are blocked as long as central commands are activated. In case of a power failure the system is disconnected in a defined mode.