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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesSecurity ServicesUsterSersys AG
Sersys AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sersys AG is the development, sale and installation of security technology solutions, particularly in the areas of video surveillance, access control and burglary protection, as well as the provision of services such as maintenance, consulting and customer service for these systems.

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Products & services

Industry:Security Services
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4.4/5

Sersys AG

Security concepts and burglary protection
Security concepts against burglary, silent alarm triggering, fire and fault notifications, transmission to alarm receiving stations or designated smartphones, control via smartphone.
Wireless alarm systems
Wireless alarm systems for residential and commercial properties with protection against burglary, fire and water damage, indoor and outdoor areas, photo verification and smart home functions.
Wired alarm system
Wired alarm systems for new builds with detectors, control unit, control panel, motion detectors, outdoor sounder, strobe light and smoke detectors.
Video surveillance
Digital video surveillance for indoor and outdoor areas with 4K cameras, remote access, alarm functions, person and number plate recognition, and recording on video servers.
Access control
Access control systems as a standalone or network solution with badge card or fingerprint scanner for home, business and commercial properties.
Video door entry systems
2N IP video door entry systems with HD camera, two-way voice communication, smartphone connection, RFID options and LTE variants without network cabling.
SmartHomeSolution
Fully integrated building control system for new builds, conversions and retrofits with operation via touch panel and smartphone; control of alarm, lighting, shutters, heating, access and video surveillance.
On-site security consulting
Personal security consulting on site or in the showroom in Uster with analysis of the current situation or of building plans and a subsequent quotation request.
Customer service and support
Customer service with periodic inspection, 24/7 on-call duty, remote access in case of faults, maintenance of the systems and service also for third-party systems.
Alarm monitoring
Alarm monitoring to an alarm receiving station such as Certas with verification by callback and possible intervention by the police, Securitas or private security services.
Maintenance contract
Regular maintenance of alarm systems with functional testing, replacement of defective parts, software updates and ensuring reliable alarm transmission.
Trust & reputation

ranQ Trust Score of Sersys AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Sersys AG scores 87.0 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.88.324%
  • 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.77.410%
  • 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%
Sersys 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%
Sersys 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%
Sersys AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sersys AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 20 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 20 reviews across all connected sources

Sources
GGoogle520
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Turbinenweg 5
8610 Uster
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.200.919
Founded
2005 · 21 years
Last commercial register change
August 30, 2017
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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