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Welcome to PTI Security Systems Wiki Page.

To learn more about the equipment and software produced by PTI, start with "How to Identify which type of system you have".

If you are trying to troubleshoot a hardware problem with your system, start with "Troubleshooting Hardware Problems".

If you have a software problem, start with "Troubleshooting Software Problems".

If you have a question about how to do something on your system, start with "General system questions".

If you are planning to buy or install a system, check out our PreInstallation Requirements.

If you have questions about surge suppression for a site, start here

Our History

PTI Security Systems


In October of 2011, Lance Comstock acquired the PTI and Digitech branded products from Chamberlain Access Solutions. PTI Security Systems will continue to develop new products to help self-storage owners work more efficiently, and allow them to market their facilities more effectively.

Chamberlain Access Solutions


Chamberlain Access Solutions (CAS) was formed by The Chamberlain Group, Inc. in mid to late 2008 after acquiring both PTI Integrated Systems and Digitech International. CAS joined the two former companies under the leadership and direction of Dave Mack. CAS was responsible for the developing the Overlock (now ILock) system for self-storage along several updates to existing products.

PTI Integrated Systems


Established in 1979, PTI became a worldwide leader in developing and manufacturing complete solutions for access control and security to customers. PTI was previously owned by Lance Comstock and provided hardware and software solutions to targeted industries. The Chamberlain Group, Inc. acquired PTI Integrated Systems in late 2007. Self storage customers recognized PTI’s controllers, APEX, VP keypads and software, as complete end to end solutions to integrate the latest technology for access control, security, video integration, wireless and TCP/IP.

Digitech International


For more than 20 years, Digitech was a self storage industry leader in developing and marketing access control and security systems worldwide. Digitech was acquired by The Chamberlain Group in early 2008. Branded products include automatic gates and keypads, video surveillance and recording systems, door alarms, site graphics, and on site communications systems.