Locksmith DOM
DOM is a cylinder brand born in Cologne, now part of the DOM Security group. Its reversible-key ix Twido cylinder embeds two floating rollers in the key: no copying without the registration card, patent until 2036, certified EN 1303 grade 6 and A2P* with the matching lock.
5.0/5DOM models we work with
DOM ix Twido
DOM ix Teco
DOM ix
DOM Diamant
DOM RS8
DOM Saturn
Why choose us for your DOM locks?
DOM locksmith in our service area
DOM: the Cologne cylinder that made the uncopyable key its specialty
DOM is a cylinder brand born in Cologne — its name comes from the city's cathedral, the "Dom". Now part of the DOM Security group, with historical production in Brühl near Cologne, the brand has established itself across Europe in a specific niche: mechanical and electronic locking technology, from the individual cylinder to the master key systems of large buildings. In Belgium, DOM is found on flat doors as well as in entire co-ownership properties.
ix Twido: the key with moving rollers
DOM's flagship product is called ix Twido: a high-security cylinder with a reversible key in nickel silver, recognisable by the two moving rollers built into the key blade. These floating elements make unauthorised copying practically impossible — including by modern scanning and 3D printing techniques, which cannot reproduce a moving part. The system is protected by patent until 2036.
Reproducing an ix Twido key is strictly controlled: it goes through the registration card handed over at purchase, and the duplicate is made by DOM. This is slower than copying a flat key — and that is precisely the point: you know exactly how many keys to your door exist.
Certifications at the highest level of the standard
The ix Twido cylinder is certified to EN 1303:2015 at the highest grade in most categories: durability class 6 (more than 100,000 cycles), key security class 6, fire resistance T90, attack resistance class 2. It also carries the Dutch SKG certification, and combined with the appropriate lock, the assembly achieves the French A2P* certification — a benchmark that many Belgian insurers recognise. The ix Teco range offers an intermediate level within the same family.
Our work on DOM locks
- Non-destructive opening — a locked DOM cylinder cannot be lockpicked like a standard cylinder: our technicians have the tools and the method to open cleanly, without sacrificing the cylinder when it can be avoided.
- Replacement and installation — fitting an ix Twido or ix Teco to the exact dimensions of your door, adjusting the projection (never more than 2-3 mm on the outside).
- DOM key copies — our catalogue covers the DOM ix, Diamant, RS8 and Saturn profiles, on presentation of the card for protected profiles.
- Master key systems — DOM is one of the European specialists in master key systems: a general master for the manager, individual keys per unit. We design and maintain these systems for Brussels co-ownership properties.
When to choose DOM?
If your priority is absolute control over key copies — rental, co-ownership, keys entrusted to third parties — the moving-roller mechanism of the ix Twido is one of the most convincing arguments on the market. If you are looking for a good patented cylinder without going that far, we will compare it with the ABUS and EVVA equivalents when we quote — each brand has its philosophy, and the right choice depends on your door and your use.
DOM cylinder jammed, key lost or a master key project in mind? Call us: 24/7 call-out in Brussels and Brabant.