The Key to Protecting Everything

Security Master, a local locksmith division of Alarm Detection Systems, Inc., has been operating in Aurora for 30 years.

As a full-service locksmith shop, Security Master offers our customers extensive security and door solutions, including a broad range of keying options. We are a proud distributor and licensed installer of the high-security key and lock cylinders manufactured by Medeco®. These devices offer additional protections, such as key duplicating restriction and anti-drill/pick-resistant locks.

Security Master’s experienced staff is skilled in replacing deadbolts and locksets. We also replace doors and repair door frames. Our team of locksmiths can service door strikes for keycard access, door closers, and exit device hardware. When needed, we can provide custom lock part fabrication that is not only pleasing to the eye but replaces the full functionality of the original part.

Benefits of a Full-Service Locksmith

Hiring a professional security locksmith can save you time and money, whether you’re dealing with the locks at home or at your business. A professional locksmith in Chicago offers the expertise you need when need a replacement key for your home or need a door lock repaired or replaced. There are a number of scenarios when a security locksmith can help:

  • You need door locks, including deadbolts and strike alignment, repaired
  • You want the security of your home or business assessed
  • You want new, higher-quality door locks
  • You need your door strengthened to be more resistant to break-ins

When you choose Security Master for your locksmith needs, you know you’re hiring a licensed expert. In addition to being current on the latest industry standards and technologies, a licensed locksmith specializes in assessing the security of your home or business, upgrading your locks, and providing responsive service so your issue is fixed as quickly as possible. These are a few of the other benefits of hiring a professional locksmith in Chicago:

  • More than 30 years of experience in Aurora
  • High-security key and lock cylinders installed correctly every time
  • 24/7 availability
  • Reliable and insured service
  • The latest tools and technology used for all types of locks and situations
  • Expert locksmiths trained in mechanical and electrical locks

Choose the ADS and Security Master Team

Security Master is your No. 1, choice for licensed and insured locksmith services in Chicago. On-site security evaluations are always free. Just fill out the form below to request a quote or contact us to speak to a professional.


Always there when you need us.


You will always reach a live operator when contacting Alarm Detection Systems. ADS has over 100 service vehicles dispatched from our local central monitoring station.


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