What exactly do the abbreviations ZA, ZE and ZI stand for?

ZA stands for Central Off, ZE for Central On and ZI for Central Pulse. By wiring the inputs in parallel, several devices can be conveniently switched on and off via a central control unit. The ZI input acts in the same way as the local input B1 and is therefore ideally suitable for activation by a doorbell system. These inputs are electrically isolated and can be operated with voltages from 8 V to 230 V DC or AC.

Last update on 2008-12-12 by webmaster.

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