About Sellox
Specialist in electronic access and key management since 1986, with proprietary software based on CyberLock.
Reliable in management and execution
A deal is a deal. Installation, configuration, and management are set up to ensure it continues to work in daily use.
What Sellox stands for
Expertise
Practical experience and technical depth. Choices are well-founded and the solution fits the situation.
Support and unburdening
Assistance with design, configuration, and management. Less manual work during issuance and modifications, a predictable process for administrators and users.
Grip and demonstrability
Access is a management process. Rights, issuance, and usage are configured so that logging and reporting are ready for review and audits.
Scalable key management
Many locations and large numbers of keys require structure. Policies, roles, and processes maintain an overview, even as the organization grows.
Dynamic authorization
Rights evolve with functions, locations, and projects. Modifying and revoking is just as controlled as issuing.
Connecting physically and digitally
A door is more than a lock. With the management software and IoT connections, access is linked to status, context, and assets.

Hans van Griethuysen, founder of Sellox, started installing alarm systems for private individuals as a student. The foundation was laid: technology that had to work in practice.
HG-Beveiliging is established. The company grows from an installer of private alarm systems into a specialist in security solutions for hotels and businesses.


Founding of Sellox
Sellox is founded. From the beginning, the focus has been on high-quality mechanical and electronic locking systems for organizations where security and reliability are essential.


Start with CyberLock
Sellox gets to know CyberLock: a solution for many issues surrounding key management and access rights without a network or cabling. Sellox engages in intensive brainstorming and contributes its knowledge of access management. This forms the basis for current developments.
Sellox systematically implements CyberLock in practice and grows into a specialist in controlled electronic key management. During this phase, it also receives recognition as the first Certified CyberLock Reseller outside the US.



International expansion
Sellox is expanding internationally with an operating company in the UK. This makes expertise in electronic access management available outside the Netherlands as well.


The Internet of Things introduces additional data points in access management. Modules such as SX IoT enable door position signaling (DPS) and real-time monitoring of objects and installations. With SXConnect, access management aligns with IT and business processes, for example via Active Directory or Microsoft Enterprise ID.
SX-ACT – Access Control Ticketing
With SX-ACT, Sellox digitizes the requesting, authorizing, and issuing of keys and access rights. A digital workflow with full logging and auditing capabilities replaces manual work.


SXLink brings together data from various security systems and translates it into insight and automation. With SX Monitoring, access events are available in real-time to external systems, such as SXLink and SXConnect. SX-Sentinel combines access control and intrusion detection in a single system developed for data centers: access to racks is managed and an unauthorized opening of a server cabinet is detected immediately.

With SX-Insight (in development), organizations can view the technical status of locks, keys, and update points: which parts need to be cleaned, maintained, or replaced. This ensures targeted maintenance and provides demonstrable proof that the system is functioning.
1976
Hans van Griethuysen, founder of Sellox, started installing alarm systems for private individuals as a student. The foundation was laid: technology that had to work in practice.
1979
HG-Beveiliging is established. The company grows from an installer of private alarm systems into a specialist in security solutions for hotels and businesses.
1986
Founding of Sellox
Sellox is founded. From the beginning, the focus has been on high-quality mechanical and electronic locking systems for organizations where security and reliability are essential.
1999
Start with CyberLock
Sellox gets to know CyberLock: a solution for many issues surrounding key management and access rights without a network or cabling. Sellox engages in intensive brainstorming and contributes its knowledge of access management. This forms the basis for current developments.
2005
Sellox systematically implements CyberLock in practice and grows into a specialist in controlled electronic key management. During this phase, it also receives recognition as the first Certified CyberLock Reseller outside the US.
2016
International expansion
Sellox is expanding internationally with an operating company in the UK. This makes expertise in electronic access management available outside the Netherlands as well.
2019
The Internet of Things introduces additional data points in access management. Modules such as SX IoT enable door position signaling (DPS) and real-time monitoring of objects and installations. With SXConnect, access management aligns with IT and business processes, for example via Active Directory or Microsoft Enterprise ID.
2022
SX-ACT – Access Control Ticketing
With SX-ACT, Sellox digitizes the requesting, authorizing, and issuing of keys and access rights. A digital workflow with full logging and auditing capabilities replaces manual work.
2025
SXLink brings together data from various security systems and translates it into insight and automation. With SX Monitoring, access events are available in real-time to external systems, such as SXLink and SXConnect. SX-Sentinel combines access control and intrusion detection in a single system developed for data centers: access to racks is managed and an unauthorized opening of a server cabinet is detected immediately.
2026
With SX-Insight (in development), organizations can view the technical status of locks, keys, and update points: which parts need to be cleaned, maintained, or replaced. This ensures targeted maintenance and provides demonstrable proof that the system is functioning.
Want to get to know Sellox?We would be happy to tell you how we work and what we can do for your organization.
Contact us