This allows more flexibility and security when compared to a single-cylinder deadlock.Įssentially double cylinder deadlocks introduce a deadlock mode. One keyhole on the exterior and one on the interior. With this variation, there are two cylinders and as such two keyholes. Of course, the exterior always requires a key to open and close the lock, and thus gain entry. The reason for the interior knob is so you can open the lock, and thus exit from inside the property. In this variation, the knob on the interior of the deadlock does not have a keyhole.
This knob may or may not have a keyhole, which results in two different types of deadlocks. On the interior side of the door, the deadlock will have a knob. The rest of the lock is on the other side of the door (the interior), and these two parts connect through the door itself. Various types of deadlocks including a deadbolt and deadlatch What is a Deadlock?Īs mentioned above, a deadlock has a keyhole exposed on the exterior of the door. The easiest way to compare these three is to look at each one in more detail. In fact, most insurance companies insist that you have a deadlock installed as part of their policy requirements.īut what about deadbolts and deadlatches? Well, these two locks are also types of deadlocks, they just have differences that make them unique. As such, have become a very common way to secure homes and businesses. These special types of locks are also known for their strength and reliability.
By inserting the right key and turning it you can unlock the deadlock and enter.
This is different to a spring lock, on your bathroom door for example, which can be locked with a push button or mechanical switch.ĭeadlocks are most commonly used on exterior entry points, such as the front door and are characterised by just a keyhole on the outside of the door. When it comes to security, the term deadlock refers to a lock that requires a key to lock and unlock it.
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