FEATURES FOR CONVENIENT MORTISE LOCK INSTALLATION

摘要

A mortise lock assembly for a door, including a casing, a locking mechanism arranged at least partly within the casing, and a plurality of location elements extending from the rear wall, for indicating a position for forming a recess in the door for receiving the lock assembly. Other non-limiting features allow the lock installer to decide what spring strength to give the handle of the mortise lock without having to carry two different locks in stock. Another non-limiting feature is an external sensor module that permits adding a microswitch or other sensor without having to provide it inside the lock.