Oldies but Goodies: Security Devices from the 60s, 70s and 80s

John Potthast was the first, and for some time the only, employee of SCI Alarm, South Bend, Ind. He recently retired as the company’s vice president of operations, but not before leaving a big history lesson behind for the company’s next generation of security experts. This photo gallery shows 37 devices commonly used in the 1960s, 70s and 80s that now comprise SCI Alarm’s new “museum” collection, curated by Potthast. The devices were collected by the company throughout its 32 years in operation as its customers upgraded old systems.