Zeitdienst Sorge

What Zeitdienst Sorge does

Zeitdienst Walter Sorge e.K., operating as Zeitdienst Sorge, is a German sole proprietorship (einzelkaufmann) founded in 1948 in Essen and now headquartered at Grasstraße 13, 45356 Essen. The firm is in its third generation of family ownership, currently led by Frank Stroezel, who assumed ownership on January 1, 2011, succeeding Dieter Stroezel. It employs approximately 40 staff and operates with no parent company, external investors, or listed securities.

The company's core business is the planning, distribution, installation, and maintenance of integrated time technology and security systems. Its time technology portfolio spans analog and digital clocks for indoor and outdoor use, master clock systems (CompuTime Center CTC, EuroTimeCenter ETC), radio-controlled clock mechanisms, NTP network time servers (NTS, DTS series), specialized industrial clock movements, and facade and advertising clocks. Its security offering covers fire alarm systems (Esser, Hekatron), intrusion detection, access control, voice alarm systems, smoke detectors, video surveillance (Hikvision, AXIS, MOBOTIX), guard patrol monitoring systems, and electronic/mechanical time-recording systems. Underlying integration rests on a modular central-clock architecture, NTP-based IT/building-automation synchronization, DCF77 radio reception with stated accuracy of one second per million years, and certified life-safety engineering (VdS, DIN 14675, DIN EN 16763, ISO 9001:2015).

Commercially, the firm operates a project-based B2B systems integration model with a direct field-sales and technical-consultation go-to-market, supplemented by a small e-commerce shop for consumables. Revenue is generated through one-time hardware sales, project installation and engineering fees, and recurring maintenance and 24-hour emergency service contracts. Customers span airports (Fraport, Düsseldorf, Hamburg), public transport operators (Rheinbahn), industrial and mining facilities (RAG Bottrop, GHH Rand), public administration (Rathaus Mülheim), social/housing foundations (Margarethe Krupp Stiftung), sports venues, and commercial enterprises, with primary geographic concentration in the Ruhr area and North Rhine-Westphalia and selective national reach.

Name

Zeitdienst Sorge

Legal name

Zeitdienst Walter Sorge e.K.

Website

https://zeitdienst.de

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

11–50 employees

Short description

Zeitdienst Walter Sorge e.K. is a German sole proprietorship founded in 1948, headquartered in Essen, that plans, installs, and maintains integrated time technology (master clocks, NTP time servers, analog/digital clocks) and certified security systems (fire alarm, intrusion detection, access control, video) for airports, public transport operators, industrial facilities, municipalities, and commercial enterprises.

Ownership category

akta.pro rank

Product category

Security and Time Systems Integration

NAICS

Electronic and Precision Equipment Repair and Maintenance (8112)

SIC

Watches, Clocks, Clockwork Operated Devices/Parts (3873)

akta.pro primary industry

Fire Alarm Systems (Design/Install/Service/Monitoring) (BPABAHAA)

akta.pro secondary industry

Electrical, Instrumentation & Controls (E&I) Maintenance (IMAIACAE)

Keywords

• Time synchronization systems
• Security systems integration
• Fire alarm installation
• Network time servers
• Workforce time recording

Headquarters

HQ city

Essen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Time technology products and systems: Sale and installation of time technology products including analog and digital clocks, master clock systems, time servers, specialized clocks, clock mechanisms, and facade clocks. Revenue is generated through product sales, project-based installation, and ongoing maintenance contracts.
2. Security systems integration and maintenance: Integrated security systems including fire alarm, intrusion detection, access control, electroacoustic systems, and video surveillance. Revenue includes planning, project engineering, installation, commissioning, and ongoing maintenance services.
3. Service and maintenance contracts: 24-hour emergency service and ongoing maintenance contracts for installed systems, providing recurring service revenue.
4. Personnel time recording systems: Electronic time recording systems, stamp clocks, and accessories for workforce management.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Zeitdienst Walter Sorge e.K. plans, installs and maintains time technology and integrated security systems for industrial, commercial, transportation, public-sector and sports customers. Offerings span master clock systems, NTP time servers, analog/digital indoor and outdoor clocks, fire alarm, intrusion detection, access control, voice alarm, smoke detection, electronic time recording, video surveillance, and industrial/sports display systems. Revenue is generated through project-based product sales, installation, commissioning and recurring maintenance and 24-hour service contracts.

Product overview

Zeitdienst Walter Sorge e.K. is a specialist provider of time technology and security systems founded in 1948, operating as a value-added reseller and integrator of branded hardware products rather than a software platform company. The core product portfolio centers on Zeitdiensttechnik (time technology) comprising Analog-Innenuhren and Analog-Außenuhren in various series (PROFILINE, METROLINE, METROCUBE), Digital-Innenuhren and Digital-Außenuhren (including LCD clocks like CRISTALYS, OPALYS, and LED models), Spezialuhren for specialized applications, Uhrwerke (clock movements including NTP-synchronized and LAN-enabled models), Werbe- und Fassadenuhren for advertising, and Zeitsteuerung Hauptuhren/Zeitsynchronisierung systems including NTS and DTS time servers. Security offerings include Brandmelde-Anlagen (Esser, Hekatron), Einbruchmeldesysteme und Zutrittskontrolle, Daitem wireless alarms, Sprachalarmanlagen, and Rauchwarnmelder. Time recording products feature Elektronische Zeiterfassung systems (Bürk ZWS), Kontroll- & Stempeluhren, and Wächterkontroll-Systeme. Video solutions include Hikvision, AXIS, and MOBOTIX cameras with NVR systems. Display technology encompasses Informationssysteme (LED outdoor displays, industrial displays) and Spielzeitanzeigen (sports scoreboards). Services include installation, maintenance with 24-hour support, and remote monitoring. The company holds ISO 9001:2015, VdS certification, and DIN 14675 qualifications.

Differentiator

Problem solved

Functional benefit

Products and services

• Analog Indoor Clocks (Analog-Innenuhren)

Quantifiable outcome

• Radio-controlled clock technology achieves accuracy of 1 second in 1 million years with automatic summer/winter time switching.

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core.

• Axis CommunicationscoreTechnology or IntegrationAxis is the global market leader in network video solutions, offering innovative video surveillance products. Zeitdienst is an AXIS Authorized Partner providing intelligent security solutions.
• BÜRK MOBATIME and BÜRK StempeluhrencoreTechnology or IntegrationComplete program for time display, time control, time distribution, and time recording with system integration. Time technology and time design for over 150 years. Zeitdienst is a certified system partner of Bürk Mobatime GmbH, Western region.
• ESSER by HoneywellcoreTechnology or IntegrationESSER is a leading expert for building safety with an extensive and forward-looking portfolio of customized fire protection concepts and innovative voice alarm systems.
• SiemenscoreTechnology or IntegrationWith over 160 years of experience in fire protection, Siemens offers the most suitable fire protection systems, products, and solutions as a globally active system manufacturer with a broad, innovative product portfolio.

Scale indicators3 records

Recent moves12 records

Expansion highlights5 records

Direct peers

• Meinberg Funkuhren: German specialist manufacturer of NTP time servers, GPS clocks, and time synchronization equipment. Directly comparable to Zeitdienst on the time/clock technology side, with overlap in NTP servers and master clock installations for industrial and infrastructure customers.
• Primion Technology: German mid-sized integrator specializing in access control, time recording, and security management for enterprise and industrial customers. Closely comparable regional security/access-control integrator competing in similar German SME and enterprise accounts.
• Bodet: Founded 1868, Bodet is the European leader in time and attendance management, clock systems, tower clocks, and scoreboards. Directly comparable to Zeitdienst across time technology, time/attendance recording, and sports display products, with similar institutional customer base.
• Bürk Mobatime: Swiss/German time technology manufacturer with 150+ years of heritage in clocks, master clock systems, and time recording. While a key supplier to Zeitdienst, Bürk Mobatime also competes at the product level for institutional clock and time-recording contracts across Europe.

Broad incumbents

• Siemens Smart Infrastructure: Siemens division offering fire protection, building automation, and security systems globally, with 160+ years of fire protection experience. Directly comparable on fire alarm and integrated safety systems, but with vastly larger engineering and deployment footprint.
• dormakaba: Global provider of access control, entrance solutions, and workforce time management with strong German/Swiss roots. Comparable on access control and time-recording, with a broader enterprise portfolio than Zeitdienst.
• Bosch Sicherheitssysteme: Bosch division offering video surveillance, intrusion detection, access control, and fire alarm systems. Comparable on the security systems integration side, with broader product manufacturing and global service network.
• Schneider Electric: Global building automation and energy management incumbent offering access control, video surveillance, and integrated security solutions. Comparable on the integrated building systems side, with substantially larger enterprise capability.
• Honeywell Building Technologies: Global incumbent in building automation, fire alarm (including ESSER), intrusion detection, and integrated security. Comparable across the fire/intrusion/access control lines served by Zeitdienst, but operating at global scale with a much broader portfolio.
• ASSA ABLOY: Global leader in access solutions including electronic access control, time and attendance, and integrated security hardware. Comparable on the access control and time-recording segments Zeitdienst serves, with broader global reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

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• LinkedInlinkedin.com/company/zeitdienst-walter-sorge

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zeitdienst Sorge