Union Oval 2332 Nightlatch Case
Product Description
Functions similary to a standard Yale type surface nightlatch. It swings locked as it has a spring bolt and is opened by either key from outside or by a thumbturn from inside. There is a holdback snib on the forend.
It's the swing locked function that makes it so useful, for instance main entrance doors to blocks of flats or office buildings where the occupant opens the lock by key, passes through, then, providing the door is fitted with a closer, the door will swing locked behind them. This nightlatch is widely used with an electric strike as part of an access control system.
To the inside you would normally see the nightlatch operated by the thumbturn shown above or a half set of lever furniture that gives easier to operate egress. Order cylinders and thumbturn separately.