Open Systems Integrators is a leading provider of integrated technology solutions specializing in design, engineering, installation, service and maintenance of intelligent low-voltage systems. Based in Central New Jersey and serving the entire state and surrounding Philadelphia counties, OSI is made up of leading industry veterans who are able to offer a true turnkey solution for your low-voltage projects, including fire alarm, security, audio-visual, sound & communications, as well as other specialized solutions. Superior Workmanship. On Budget. On Schedule.