Monitronics is one of the nation’s largest and fastest-growing home security alarm monitoring companies. Headquartered in Dallas, it provides monitored home and business security system services to more than 800,000 residential customers and commercial clients through its network of independent Authorized Dealers in the U.S., Canada and Puerto Rico. Monitronics’ 24/7 Alarm Response Center provides reliable and uninterrupted security monitoring service while consistently meeting or exceeding all UL, National Fire Protection Association and Central Station Alarm Association standards.