Scandinavian, Finnish, and Swiss Cylinder Compatibility
Compare regional cylinder labels by exact profile, market-specific product variant, lock case, measurements, and normal operation.
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Regional names help identify what to check, but they are not interchangeable dimensions or a compatibility verdict. “Scandinavian,” “Finnish,” and “Swiss round” can describe different cylinder or lock-case paths; compare the exact market version and installed mechanism with the candidate smart lock’s current guide.
The same regional label does not establish a common cylinder size, lock case, or smart-lock result.
Product guides describe different paths
| Example | What the cited guide says | What it does not establish |
|---|---|---|
| Nuki Smart Lock Ultra | Lists Euro-profile and Swiss-round cylinders; its measurement and clearance gates are for this model. | Support for every round profile or an installed lock-case sequence. |
| Nuki Smart Lock Ultra Nordics | Lists typical Scandinavian oval or round cylinders, with an inside key or thumbturn, and requires deadbolt operation. | Finnish-case interchangeability or every multipoint sequence. |
| Aqara Smart Lock U200 | Names selected Scandinavian cylinders among its supported profiles. | A complete list of profiles or support for every Nordic door. |
| Yale Linus for Finland | Yale’s Finland support page names a Finnish-specific product version and tested ABLOY lock cases. | Compatibility of other Linus market versions, unlisted cases, or every Finnish cylinder. |
These are separate product and market examples, not competing definitions of a shared regional standard. A Swiss-round entry in one guide does not mean that every round cylinder is Swiss round; a Finnish Linus case list does not cover every ABLOY case or prove a third-party retrofit will operate it.
Record the installed door before comparing products
Write down the country, cylinder markings and outline, inside key or thumbturn, lock-case make and model if known, and the normal sequence for securing and opening the door. Measure both cylinder sides using the exact product guide’s reference points. Note door swing, cylinder projection, handle and frame clearances, deadbolt or latch action, and any handle lift or extra locking points.
Record each installed-door observation alongside the exact product and market version being checked.
Keep model-specific thresholds attached to the named model. Nuki Smart Lock Ultra’s Euro/Swiss-round measurements are not the Ultra Nordics criteria; Yale’s Finnish Linus version is not a general Finnish-cylinder rule. If the product guide is silent about the installed case or sequence, keep the result unknown and ask the manufacturer or a qualified locksmith. Use the measurement guide and mortise-action guide for those checks.
Reference material