Key switch for ASSA hole standard with anti vandal micro switch which breaks if the cover is removed. For operation with one of the following ASSA or KABA cylinders: Type 570, 5-pin, type 770, 7-pin with oval front ring, type 1576 or with round front ring type 1776. The micro switches have a 1-pole alternating contact for 0.6A 125VDC with resistive loading. The key switch is installed on the rear of the front plate with two screws MRX M5x22. 50mm free depth is required. Version: NS-1-Vandal: Monostable, the key cannot be removed in operating position. NS-2-Vandal: Bistable, the key cannot be removed in operating position. NS-3-Vandal: Bistable, the key can be removed in operating position Picture shows NS-1.
