What it means for a cylinder to be tested
It means a laboratory or body has assessed certain features under defined conditions. To know what it covers, you need to check the standard, the scope, the grade achieved and the documentation for the exact model.
Do not mistake one feature for total protection
Resistance to drilling, extraction, snapping, manipulation and key copy control are different things. A result in one of them does not tell you how the whole assembly will hold up against any attack.
Size and compatibility
The cylinder must have the right length, cam and configuration. If it sticks out too far or is paired with an incompatible protector, it may be more exposed or work poorly.
Key copy control and card
Some systems restrict copying with protected key profiles, a card or other procedures. Ask who can order copies, how long support lasts and what happens if the card is lost.
Fitting is part of the result
The cylinder works together with the lock, escutcheon, door and frame. Ask for the whole assembly to be checked and keep the invoice and documentation you are given.
