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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsSt. GallenSchlüssel Müller AG.
Schlüssel Müller AG. Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Schlüssel Müller AG is to provide services and solutions in the field of lock and security technology, including key management, lock technology, security systems, door, access, control systems, building security, security architecture, retrofit burglary protection and customer service with 24-hour service.

AI-generated
Offering

Products & services

Industry:Specialized Construction Installations
✓ Offered4
Key service
Cutting new keys, reordering and picking up directly; measuring, installing and planning locks, cylinders and keying systems; emergency openings and key-related accessories.
Security technology
Advice, planning and installation of products for building security and burglary protection; mechanical door locks, door closers, access control systems, securing windows, doors and light wells.
Engraving and nameplates
Metal, acrylic and plastic nameplates with engraving or logo printing; different shapes and sizes for various applications.
Reorder forms
Order forms for spare keys as well as application forms for Dormakaba for companies, building management and private individuals for download.
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4.5/5

Schlüssel Müller AG.

Trust & reputation

ranQ Trust Score of Schlüssel Müller AG.: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Schlüssel Müller AG. scores 82.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.69.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.100.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.100.08%
Schlüssel Müller AG. scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Schlüssel Müller AG. scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Schlüssel Müller AG. scores 91.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.91.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schlüssel Müller AG. reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.4 out of 5 stars from 105 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 105 reviews across all connected sources

Sources
GGoogle4.4105
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Hier entsteht die Karte
Katharinengasse 14
9004 St. Gallen
Opening hours
Mon
Closed
Tue
07:45 - 12:00, 13:30 - 17:00
Wed
07:45 - 12:00, 13:30 - 17:00
Thu
07:45 - 12:00, 13:30 - 17:00
Fri
07:45 - 12:00, 13:30 - 17:00
Sat
09:00 - 12:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.267.970
Founded
1966 · 60 years
Last commercial register change
March 10, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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