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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryMägenwilWilhelm Sihn AG
Wilhelm Sihn AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of WISI - Wilhelm Sihn AG is the planning, implementation and support of communication networks, particularly in the field of cable network and home distribution systems, SAT reception systems, IPTV and network technology as well as FTTH components. The company provides consulting, planning, installation and support services for various customers, including cable network operators, telecommunications providers, residential communities, office buildings and public buildings.

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Offering

Products & services

Industry:Electrical IndustryTelecommunications
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Wilhelm Sihn AG

✓ Offered8
End-to-end solutions
Consulting, concept development, planning and implementation for network modernization, technology change, HFC networks, head ends, IPTV solutions, as well as FTTB and FTTH networks.
Satellite reception systems
SAT distribution systems, multiswitches, parabolic antennas, optical SAT installation as well as accessories such as roof rafter mounting and mast protection cap for smaller and larger systems.
IPTV & network technology
IPTV processing systems, middleware, HLS streaming and signal processing for multicast transmission, end-device management and TV delivery over IP networks.
FTTH
Fibre-optic patch cables, FTTH network termination, XGS-PON, optical distributors and NOVALINK switches for fibre connections and new networks.
CATV home installation
House connection amplifiers, coaxial cables, branch taps and splitters, antenna outlets, connectors, connection cables, adapters and a case assortment for cable TV installations.
Support
Advice on products and installation, planning of HVA systems, remote support via remote assistance, as well as tools such as IP-Supporter and Network-Designer.
Training courses and webinars
Courses on IPTV, HVA and SAT installation, as well as webinars on signal processing, in-building distribution technology and SAT reception solutions.
Optical platform
Modular optical platform for HFC and FTTx networks with optical transmitters, return-path receivers, redundant power supplies and network management.
Trust & reputation

ranQ Trust Score of Wilhelm Sihn AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Wilhelm Sihn AG scores 51.1 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.58.124%
  • 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.35.310%
  • 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.50.08%
Wilhelm Sihn AG scores 89.3 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.70.07%
Wilhelm Sihn 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%
Wilhelm Sihn AG scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wilhelm Sihn AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.7 out of 5 stars from 3 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
3.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle3.73
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hintermättlistrasse 9
5506 Mägenwil
Opening hours
Mon
07:30 - 17:10
Tue
07:30 - 17:10
Wed
07:30 - 17:10
Thu
07:30 - 17:10
Fri
07:30 - 17:10
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.888.439
Founded
1993 · 33 years
Last commercial register change
May 21, 2021
Employees
11 to 20
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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