We have an older computerized card access system that locks and unlocks certain office doors in the morning and end of work day. It was installed a long time ago by a company no longer in business. We heard about AAA Alarms as being a local company here in RI that services and installs these types of card access systems for business security. These folks really know electronic alarms and security systems. They got our old system up and running temporarily, and recommended a system upgrade path for our older system that was very cost effective, as AAA Alarms was able to use much of our existing equipment. We have since upgraded and can't say enough good things about the system and AAA Alarms for their high level of service. Our door locks, card readers and access control software are now all new and work flawlessly! If you need an Access Control System, i would definately recommend you call AAA Alarms and Fire Protection.