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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryBiel/BienneSigma Electronic SA
Sigma Electronic SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sigma Electronic SA is the development, manufacture and distribution of water tightness testing equipment, particularly for the watch industry and other sectors requiring high-precision measuring instruments for quality control.

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Offering

Products & services

Industry:Electrical Industry
✓ Offered10
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4.0/5

Sigma Electronic SA

Water Resistance Tester (WRT)
Water-Resistance Tester series WRT SM-8850E for leak detection and water-resistance testing, with automated and programmable testing, up to 50 bar pressure, and options for data transfer to a computer.
Industrial WRT
Industrial water-resistance testing solutions with technical consultancy, conceptual advice for test equipment, and customized solutions for quality-control testing chains and mass production.
Booster
High-pressure boosters and pressure amplifiers for compressed-air networks or local compressors, used to supply water-resistance testers; available as stand-alone, machine-controlled, and very high-pressure versions.
Printouts for water-resistance tests
Customized printouts for water-resistance testers, with company logo, headline, and address in the header and footer of test receipts.
Oil-free Compressor
Oil-free compressors for clean compressed air, available as machine-controlled units for water-resistance testers and as stand-alone compressors with air tank.
Technical assistance
Technical support for technical questions, available five days per week by email or phone.
Repairs and calibration
Maintenance and repair of equipment, calibration of water-resistance testers, and calibration certificates for ISO 9001 and ISO 16949 audits.
Custom projects
Waterproofing product development and design, including specialized expertise for customer projects and collaboration schemes.
Consulting
Consulting on waterproofing issues and challenges, solution proposals, staff education, and support for new business ideas related to waterproofing.
Upgrades and retrofitting
Upgrades and retrofitting of older Sigma Electronic machines to extend useful life and avoid replacement.
Trust & reputation

ranQ Trust Score of Sigma Electronic SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Sigma Electronic SA scores 60.4 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.70.824%
  • 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.27.910%
  • 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.70.08%
Sigma Electronic SA 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%
Sigma Electronic SA 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%
Sigma Electronic SA scores 6.9 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 35.6.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sigma Electronic SA reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Ohm-Weg 10
2504 Biel/Bienne

At a glance

Legal form
Corporation
UID
CHE-107.921.893
Founded
1978 · 48 years
Last commercial register change
December 12, 2024
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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