FAQs

A master key system is a locking system that allows different keys to open specific locks, while one master key can open all locks in the system. This setup is ideal for businesses, landlords, and facilities managers who want controlled access and convenience.

A master key works by operating a lock cylinder that has been specially pin-coded to accept both its individual key and the master key. This allows different levels of access for staff, tenants, or departments, all within one secure system.

The main benefits include reduced key management, increased security, and customised access control. A master key lock system allows you to decide who can access certain areas while keeping overall control with a single key.

Absolutely. Modern master key lock systems from CES Security are precision-engineered to resist common break-in methods such as snapping, drilling, and picking. They are designed to provide both convenience and robust protection.

At CES Security, we offer a range of locking systems. We offer 3 star cylinders, the PXM6 Range, Mortice Locks and Master Keyed Systems.

To view our products, click here.

Yes.

For the highest degree of security, 3 star Kitemark is available across our entire range of patent protected cylinders. They can be keyed to differ, keyed alike or as part of a master key system.

View our range of TS007, 3 star British Kitemark cylinders here.

Yes. CES Security master key systems are fully scalable, meaning additional locks and keys can be integrated as your business or property grows, without compromising security.

All CES locking systems comply with the most stringent requirements of DIN and/or EN.

How thick is your door?

Unlike many lock suppliers, we don’t just offer standard sizes. We manufacture all our cylinders in-house, to almost any size you can conceive.

You cannot. And more importantly, neither can anyone else.

We take key duplication protection very seriously.

Replacement key requests must be made direct to the original supplier, accompanied by a security reference card or sufficient evidence of you being the system owner.

Only lubricate where necessary and only with manufacturer approved cylinder spray or graphite. Do not use silicone based lubricant which may cause the cylinder to fail.

Download our care guide for your cylinders here.

No, it’s not. Patented is the securest form of locking system, ensuring you are protected by law from your keys being duplicated.

Yes.

We offer a range which are tested and certified by the Dortmund Materials Testing Institute, in accordance with current standards (DIN 18250, DIN EN 12209 and DIN EN 179).

Our Fire Rated lock range also has the Warrington ‘Certifire’ certificate of approval.

Yes. CES Security cylinders are engineered to meet or exceed the latest security standards, offering protection against snapping, drilling, bumping, and picking. This ensures your property is protected against the most common break-in methods.

The correct cylinder depends on your door type and lock case. Our team at CES can help you measure your existing lock and recommend the right profile, size, and security features to ensure a perfect fit.

CES cylinders comply with UK and European standards such as BS EN 1303 and TS 007. CES Cylinders are also British Standard Kitemark approved, giving you peace of mind that they meet stringent security requirements.

Master key systems can be used anywhere, but are widely used in schools, hospitals, offices, hotels, apartment complexes, and industrial facilities. They are particularly valuable where multiple people need access to different areas with varying levels of security.

Replacing a lock cylinder is straightforward. Simply remove the fixing screw from the side of the lock, insert the key, and turn it slightly to align the cam so the cylinder slides out. If you are unsure, we recommend contacting a professional locksmith or our team for advice.