Monitor Computer Systems has been at the forefront of alarm monitoring technology since 1984. Our flagship platform, Sentinel, supports approximately 600,000 live signaling systems to British, European, and U.S. standards, with over 240 integrations and UL 1981 certification since 2001. Trusted by major security companies, local authorities, financial institutions, and police forces worldwide, Sentinel delivers resilient, advanced monitoring for video, alarm panels, and lone-worker safety. As a privately owned, independent company, Monitor Computer Systems is committed to innovation, compliance, and customer success, helping monitoring centers streamline operations, expand services, and meet evolving industry demands.