United Alarm: Keeping the important things safe ® Introducing Alberta's largest privately-owned Residential and Commercial Security Company! ULC Listed for Installing & Monitoring for both Burglary and Fire. United does ULC installs, Alarm, CCTV and Access Control. We can provide for all your security needs. United Alarm has been exceeding the residential and commercial security needs of families and businesses in Calgary. Established in Calgary in 1990, United provides Calagians with affordable, dependable alarm services independently. We adopted a customer-cantered approach from day one, and it was an approach that really paid off for our company and ultimately our clients.