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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesSecurity ServicesTessereteOne Alarm SA
One Alarm SA Logo
Verified· 3 sourcesTrust Score4.5/5

One Alarm SA

Summary

About the company

One Alarm SA provides security systems and services for residential and commercial clients, including alarm and video surveillance systems. Its offerings include sales, installation and maintenance of alarm and CCTV systems, intercoms/videophones, telecare solutions for the elderly, a smartphone app, rental options and internet/telephony support.

AI-generated
Offering

Products & services

Industry:Security Services
✓ Offered8
Home security systems
Monitoring and protection solutions for homes, with instant alerts on phones and computers via the OneAlarm App and advice to find the right solution.
Professional alarm and burglary systems
Professional alarm and burglary systems for offices and businesses, with motion sensors, glass-break detectors, fire sensors, sirens and surveillance cameras.
Video surveillance
Video surveillance systems with high-definition recording, remote viewing, intelligent motion recording and number-plate reading.
Intercoms and video intercoms
Sales and installation of intercoms and video intercoms, with video integration and app control to see, talk and open remotely.
Alarm system assistance and maintenance
Technical support and maintenance for alarm systems, listed as a dedicated service in the products and services section.
Alarm system rental
Rental of alarm systems for temporary or flexible needs, presented as a separate service among the products and services.
Telecare and security for seniors
Telecare and security solutions dedicated to seniors, included among the site’s main services.
Smartphone app for alarms and burglary protection
Mobile app to control alarm and burglary systems, receive alerts and manage the system status remotely.
Trust & reputation

ranQ Trust Score of One Alarm SA: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

One Alarm SA scores 92.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValue
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from across all connected sources

Comparisons

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Location

Hier entsteht die Karte
Via alla Chiesa
6950 Tesserete
Opening hours
Mon
08:00 - 12:00, 13:00 - 18:00
Tue
08:00 - 12:00, 13:00 - 18:00
Wed
08:00 - 12:00, 13:00 - 18:00
Thu
08:00 - 12:00, 13:00 - 18:00
Fri
08:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
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Weight
  • 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.92.024%
  • 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.90.410%
  • 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.95.08%
One Alarm 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%
  • 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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
One Alarm 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%
One Alarm SA scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

One Alarm SA reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 34 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. Full methodology

34 reviews
Sources
GGoogle534
★TrustpilotSoon
PProvenExpertSoon

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

UID
CHE-113.003.942
Founded
2006 · 20 years
Last commercial register change
July 1, 2021
Employees
1 to 10

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