AiN (Authorized Integrators Network) Group, now in its 13th year, held its first stand-alone conference in late January at the Sandpearl Resort in Clearwater Beach, Fla. AiN is the managing partner of GE Home and Security Technologies (GEHT), a network of about 200 dealers who are authorized to sell and install GE-branded security systems from Interlogix, as well as sound systems, lighting, home automation, central vacuum, and other technologies from approximately 30 approved vendors.

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.