An automatic multi-point locking system which is operated as soon as the door closes. This means that an external lever handle is not required to operate the locking points and the lock can be deadlocked or opened externally by turning the key a quarter of a turn. From the inside the door can be opened by an internal thumb turn, again with a quarter turn. The door is automatically locked when closed from the inside and the key is then required to gain entry from the outside.

The heritage lock has two solid anti-pushback hooks that automatically operate to achieve instant security. The lock can be additionally secured by throwing the dead bolt with the key on the outside and thumb turn on the inside. The lock is secured by design PAS23/24 accredited.