Kastle Systems International LLC engages in the design, installation, operation, and remote management of buildings and office security systems. Its products and services include myKASTLE, a Web-based security management software; access control systems; managed video and monitoring services; fire prevention systems; intrusion detection systems integrated with access control; sensor monitoring systems for room and equipment temperature monitoring, water level measurement, loss of power notification, equipment tamper monitoring, and system off alert; KastlePresence, an Internet of Things workplace solution that offers mobile access solutions to make spaces for people who occupy and manage office buildings; and FrontOffice, a unified database that optimizes personnel and visitor management in commercial real estate properties. The company serves commercial real estate portfolios, businesses, law firms, education facilities, the government sector, the outdoor sector, and multifamily facilities. Kastle Systems International LLC was founded in 1972 and is based in Falls Church, Virginia with additional offices in Los Angeles and San Francisco, California; Houston and Dallas, Texas; Chicago, Illinois; Atlanta, Georgia; New York, New York; Philadelphia, Pennsylvania; and Sydney, Australia.