As a modern light time pulse switch (impulse switch), the ZSK 2 combines a high degree of comfort, flexibility and functionality with easy handling and operation. By briefly or for a longer period of time, you can choose between two independently adjustable time ranges. This enables individually configurable short-term / long-term switching in a range of 0.25 to 150 minutes. By pressing the light button again, the consumers are switched off immediately. Two operating modes allow the long-term switching to be blocked. As a further special feature, the ZSK 2 contains an additional external voltage input (8v-230V UC) that is galvanically isolated from the other inputs and outputs and can be controlled by a door intercom system without a coupling relay, for example., Dimensions: 18x55mm, 230V AC - 1 normally open contact (potential-free) 16A, tvK/tvL -18/-150min