Donnelly Security, a trusted security company based in Danbury, CT, has been serving Fairfield, Litchfield, Hartford, and New Haven counties for over 25 years. Specializing in custom residential and commercial security systems, they offer installation, maintenance, monitoring, and testing services, ensuring the safety and peace of mind of their clients.
With a focus on burglar, fire, medical, low temperature, and holdup alarms, as well as CCTV systems, Donnelly Security is licensed in Connecticut and operates a 24-hour U.L. F.M. approved Central Station for monitoring. Committed to excellence, they strive to provide the best possible service in the industry, making them a reliable choice for all security needs.
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