Override key switch If the em lock malfunctions due to the failure of the reader or other reasons, the user can switch between normally closed (N.C.) and normally open (N.O.) contacts by using the key, thus forcing the door to open. Override Key Switch is used as a backup to an access control system.
Override key switch If the em lock malfunctions due to the failure of the reader or other reasons, the user can switch between normally closed (N.C.) and normally open (N.O.) contacts by using the key, thus forcing the door to open. Override Key Switch is used as a backup to an access control system.
