Tag Archives: Master Keys

Mul-T-Lock completes security upgrade project at Bristol University

As part of an ongoing complete security upgrade throughout the campus, Bristol University has benefited from Mul-T-lock’s MTL600 master key suites, designed and installed by Guardian Security Systems.

Bristol University is one of the most popular and successful universities in the UK and currently ranked 62nd in the world in the QS World University Rankings 2022.

Mul-T-Lock has worked closely with Guardian Security Systems, supplying high-security MTL600 suites to over 20 buildings across the university campus, all of them operated on a master key suite basis.

Antony Blundal, security services manager (systems) at Bristol University, explained: “University premises present a number of security challenges due to the open nature of the campus sites. There are different access requirements across all the facilities to consider. Working closely with Guardian Security Systems and Mul-T-Lock, we developed a specification using MTL600, which is flexible and remains cost-effective. The master key operation is invaluable to keep maintenance to a minimum, while the patent protection allows us better control of how many key copies are in existence.”

Patent protected until 2032, MTL600 presents a superior locking solution, with a combination of several technological elements involved to create strong resistance against different types of lock manipulation.

The high-security solution is available in various formats to allow Guardian Security Systems to create master keying systems with different locking products across campus, including a wide range of cylinders, padlocks and locks, in turn delivering the necessary protection and maximum convenience.

Precision engineering

Ken Ham of Guardian Security Systems commented: “MTL600 uses the latest design technology and highly automated production techniques to deliver precision engineering with unparalleled performance. This is why it was particularly suitable for Bristol University, who we worked with to design, build and maintain the master key suites across campus to ensure high-quality security, while also providing necessary access for staff and students.”

Ian Thresher, regional sales manager at Mul-T-Lock, responded: “The changing nature of the university ‘ecosystem’ in the UK, with significant developments such as rising tuition fees, has many implications, among them consequences for the safety and security of students, staff and the public.”

Thresher continued: “The legal and reputational issues arising from any failure to protect and secure people, physical assets and information data are also increasingly severe. Hence, it’s integral for companies such as Mul-T-Lock and Guardian Security Systems to work closely with universities in order to understand bespoke security requirements and install the best solutions.”

*For more information on Mul-T-Lock’s range of patented master key suites visit www.mul-t-lock.co.uk

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dormakaba announces new patent for Kaba 20 long-life protected master key system

Access control and security solutions developer dormakaba has announced a new European patent – valid until 2033 – applying to its Kaba 20 key blanks, keys and their overall functionality. An evolution on the company’s successful Kaba 20 cylinder system, the improved design “delivers the highest levels of security, reliability and sustainability”.

The new patent has been specifically designed to offer enhanced strength and durability, with the Kaba 20 being an ideal choice for industrial applications that require secure access in some of the most demanding environments.

The patent features a unique cylinder design which has been precision-engineered to specific tolerances and incorporates up to 27 pins – an increase on the original 22-pin lock. This intricate system provides a high degree of protection against attempted manipulation, allowing users to have total confidence in the integrity of the system.


As well as an upgrade to the lock, the entire Kaba 20 long-life protected master key system has been enhanced to deliver superior security. The key features a controlled milling process to regulate and protect against copying. Duplicate keys are only available directly from the factory with a pre-arranged authorisation process.

dormakaba also offers a technical consultancy to engineer specific solutions and functionality for bespoke end user customer requirements.

“We’re thrilled to add the new patent Kaba 20 long-life protected master key system to our product portfolio,” commented Clive Baker, director of security locking at dormakaba. “We pride ourselves on delivering the highest quality access systems and believe the new extended patent is the ideal product for those seeking the most secure controlled access solutions.”

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