Reliable solution for the protection of valuables

With STACKE, the focus is not only on our products, but also on dedicated information provided to and for our clients. Our products are not only safe, but also complex – defined by clear standards and highly-specialized manufacturing methods. This complexity is also reflected in our specific technical terms, termini and basic principles of application – what does this mean in detail?

For this reason, we are preparing another innovation in this section of our website – a Safe Wiki. There you will find a pragmatic, simple and fast tool to look up commonly used technical terms and definitions from the world of safes.

You do not find a specific term you are urgently looking for? We will be pleased to get your feedback by means of the contact form.


  • ATM
    Automatic teller machine
    Means for holding and processing cash and/or valuables.
    For the purpose of EN 1143-1, automated teller machines, currency exchange machines, currency recycling machines and machines such as teller assist machines are all considered types of ATM.

  • ATM Base
    Integral part of an ATM system is located between the ATM safe and surface to which the safe is to be anchored.

  • ATM Safe
    Safe forming part of an ATM System.

  • ATM System
    Assembly of sub-units which provides an ATM function and affords security to cash and /or valuables stored within the ATM safe.

  • Basic value BV
    Number in resistance units allocated to a particular tool.
    Note to entry: the basic value represents problems in obtaining, transporting, conditions (e.g. water cooling and power availability) and using the relevant tool at the site in questions, and the necessary knowledge and experience for its efficient use.

  • Boltwork
    Mechanism by which a closed door is held such that, until it is in the withdraw position, the door cannot be opened.

  • Built in safe
    Safe whose protection against burglary is partly dependent upon materials incorporated into it, or attached to it, during installation.
    Note 1 to entry: Under floor safes and wall safes are special types of built in safes.

  • Free standing safe
    Safe whose protection against burglary depends only upon the materials and construction of its primary manufacture and not upon materials added or attached during installation.

  • Internal space
    Part of the interior of an ATM safe which is bounded by the inside surfaces and the boltwork cover plates of the door of the ATM safe body.

  • Lock
    Device able to recognize a coded input and which performs a blocking function on the boltwork or the door.

  • Relocking device
    System comprising blocking and detecting elements which will prevent the boltwork from being withdrawn if a burglary attack is detected.
    Note to entry: a relocking device can be part of the locking mechanism (e.g. active or live relocker) or an independent unit (e.g. passive relocker).

  • Resistance grade
    Classification designation for burglary resistance.

  • Resistance unit RU
    Burglary resistance which results from one minute’s use of a tool carrying the coefficient 1 and the basic value 0.

  • Resistance value
    Numerical value in resistance units calculated for each test.

  • Safe
    Storage unit which protects its contents against burglary and when closed has at least one internal side < 1 m length.

  • Strongroom
    Storage unit which protects against burglary and when closed has internal side lengths in all directions > 1 m.
    Note 1 to entry: Strongrooms may be cast in situ, constructed from pre fabricated elements or a combination of both.

  • Strongroom door
    Door with locks, boltwork and frame intended for giving access to a strongroom.

  • To bolt
    To throw the boltwork or the bolt of the lock (if there is no boltwork) to a position where it fixes the door in closed position.

  • To close
    To move the door so it becomes possible to bolt it.

  • To lock
    To lock a thrown boltwork by action of a lock.

  • Tool coefficient
    Number in resistance units per minute allocated to a group of tools.
    Note to entry: the tool coefficient represents tool efficiency and factors such as noise, smoke, fumes and other effects, which increase the likelihood of a burglary attack being detected.
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