Latchbolt is withdrawn by handle from inside and key outside. Bolt and handle can be deadlocked by key from outside or by slide button inside. Slide button or snib also operates latch holdback facility.
Latchbolt is withdrawn by handle from inside and key outside. Lock automatically deadlocks on closing door, inside handle dead locked by key from inside.
Operates by key from outside or knob from inside. Incorporates a slam action automatic deadlocking function. Inside knob can be locked by key from inside.
Deadbolt is automatically thrown when door closes and withdrawn by pulling inside lever or by key outside. Handle is locked by extra turn of the key from outside. Bolt can be held back by turning the snib on the side of lockcase.
