Night latches also commonly known as Yale locks are usually operated by turning the knob from the inside and unlocking with a key from the outside. They are also known as slam locks because once you close the door behind you; the door will lock automatically unless you put it on the latch by sliding a snib.
YALE 77 NIGHTLATCH
Yale British Standard nightlatches offer insurance rated security where a BS mortice lock cannot. These traditional night latches are available in a range of different finishes. The key operation is from the outside and the lever handle operation from the inside. This nightlatch features a snib function which allows the latch to be held back.
Banham nightlatches are very high quality, made in the UK. The key operation is from the outside, and the lever handle operation is from the inside. Use deadlock by reverse turn of the cylinder, both the key and handle are deadlocked. This nightlatch features a snib function that can hold the latch in locked or withdrawn position.
DOUBLE LOCKING NIGHTLATCH
ERA double locking nightlatches are fantastic value for money and are available in a range of finishes. The key operation is from the outside, and the lever handle operation is from the inside. Can be deadlocked from the outside by key or the inside by push button. The latch can be held back by withdrawing the latch and depressing the button.