Double Euro Cylinders Lock
Double Euro Cylinders are those with a lock operation on both sides of the door. You may well have this type of lock on your front or back door, allowing you to lock up the property on your way out, and also lock up from inside too. This style of security cylinder is also known as "double key", and ensures controlled access from both sides of the lock.
In the majority of cases, if a key has been left in on one side of the double euro cylinder, it will not be possible to unlock it from the other side with a second key. This isn't often something that causes an issue, however if perhaps you are looking at security for an elderly relative or person with limited mobility who tends to leave the keys in the lock, making it difficult to gain access in an emergency, then a Double Euro Cylinder with an Anti-Lockout feature is well worth a look. You can find our High Security Anti-Lockout Euro Cylinder on the link below: