DOM RS Sigma Service & Support

According to DIN EN 1303 / DIN 18252 the cylinder should not protrude more than 3 mm from the door leaf / security fitting.

Older cylinders cannot be extended in length. However, provided your cylinder is ordered with modular technology (system M) your cylinder can be extended in 5 mm increments.

Only in selected stores, e.g. specialized dealers (locksmith), or builder’s hardware dealers. An order cannot be placed with us, as we only supply specialized dealers. Address information can be obtained on our website under the menu item “Find a dealer”.

Yes. Detailed care instructions are attached to every DOM product and should be read carefully before using.

To apply for a new registration card, please contact your local locksmith. As a manufacturer of locking systems, we only supply specialist retailers. You will find address information for specialist retailers on our website under the menu item "Find a retailer". After completing a Statutory Declaration together with the locksmith (this form can be downloaded in our German Download Area), this document will be forwarded to us. For security reasons a new registration card can only be issued after receipt of this declaration.

In principle, you can always contact us. Under the menu item “Contact” an email can be sent to us at any time. As we only supply specialist retailers we are not able to provide you with any price information on our various systems. Please contact your local specialist retailer who will be pleased to give you advice and recommend a locking system that meets your requirements.

Of course. Please contact your local specialist dealer. On supplying the registration card for the master key system your order will be forwarded to us.

Steel or carbide elements are incorporated into the cylinder housing and core to prevent the lock from being penetrated by drilling tools.

Specific locking technology terms are explained in a glossary which can be found under the menu item “Service”. But of course you can also send us an email at any time. We will be pleased to answer all your questions.

Of course. Many locking systems offered by DOM have been certified by the VdS (Association of Property Insurers) and classified B and BZ+.

In principle, yes - as long as your order is accompanied by your registration card and placed by a locksmith or specialist retailer.