Why choose dsi security systems? DSI Security Systems owns and operates one of the most advanced ULC® listed central monitoring stations in the industry and we are Manitoba's exclusive Honeywell First Alert Dealer. Contact DSI today to learn more about how we can secure your home or business.Where is dsdsi security located in birmingham? DSI Security, Inc 3100 Lorna Rd. Suite 200 Birmingham, AL 35216 Local: (8am – 5pm) 205 – 978 – 1194What does dsi stand for? Diversified Services for Industry (DSI) Diversified Services for Industry (DSI) was founded in 1983 as a contract janitorial service and is a Vonachen Family Company.Why choose dsi underground? DSI Underground develops, produces and supplies high quality products and systems for Underground Mining and Tunneling in more than 45 countries and in regional manufacturing sites. With our DSI Underground subsidiaries, we are present on all continents to provide tailored solutions for our customers.