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Digital Alert Systems

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Digital Alert Systems is a U.S. manufacturer of Emergency Alert System (EAS) and emergency messaging equipment for broadcast, cable, and IPTV providers.

Last updated September 26, 2026

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Overview

Digital Alert Systems (DAS) is an American technology company that designs and manufactures Emergency Alert System (EAS) equipment and software for the broadcast, cable, and IPTV industries. The company was founded in 2003 by Bruce Robertson and Tom Wood, who identified a need for more advanced, software-centric EAS platforms that could keep pace with the expanding scope of emergency alerting. DAS operates as part of Monroe Electronics, a custom engineering house founded in 1953 by Robert E. Vosteen. Monroe Electronics had a long history in the development of cue-tone decoders, CATV switching, and the first emergency override system for cable television. This heritage provided a strong foundation for DAS's entry into the EAS market. DAS offers a range of products including the HALO emergency alerting and messaging system, 21CVAA compliance solutions, CATV switching and control equipment, and the UP•TRADE program. The company's solutions are used by broadcasters, cable operators, and other alerting authorities to ensure compliance with federal EAS regulations and to deliver critical emergency information to the public. DAS is known for its software-based approach, which allows for simplified upgrades and integration with modern network-centric systems. Digital Alert Systems is headquartered in Lyndonville, New York, and serves customers primarily in the United States, with some international reach. The company remains a key player in the emergency alerting market, continuously updating its software to meet new requirements and security advisories. Its products are widely deployed across the broadcast and cable industry.

History

Digital Alert Systems was founded in 2003 by Bruce Robertson and Tom Wood. The founders identified three key issues in the Emergency Alert System (EAS) landscape: the original scope of EAS was expanding and becoming more critical for government agencies; existing equipment was inadequate and needed significant technological improvements; and a blended approach leveraging advanced information processing technology with network-centric thinking would better serve customers. They envisioned a more relevant EAS platform that incorporated simplified and upgradable software. The company operates as part of Monroe Electronics, a firm with a deep history in electronics engineering. Monroe Electronics was founded in 1953 by Robert E. Vosteen as a custom engineering house specializing in instrumentation and systems for local industries. In the late 1950s, Vosteen invented a reliable, drift-free method for non-contact measurement of static electricity, which became an international standard used in photocopier R&D, industrial monitoring, sensitive electronic assembly, bio-electric research, and lightning warning. In the late 1960s, Monroe Electronics developed high-speed cue-tone decoders and cue-tone control devices for audio paths, pioneering work in the early Cable Television (CATV) industry. The company developed cue-tone switching for the fledgling Home Box Office (HBO) movie service, allowing signals to be switched under unattended control. During the same period, Monroe Electronics developed the first emergency override system for CATV. Building on this legacy, Digital Alert Systems has become a key supplier of EAS equipment. Its product line includes the HALO emergency alerting and messaging system, 21CVAA compliance solutions, CATV switching and control equipment, and the UP•TRADE program. The company provides software updates, security advisories, and customer notices to ensure its systems remain compliant and secure. DAS is headquartered in Lyndonville, New York, and serves broadcasters, cable operators, and alerting authorities, primarily in the United States.

  • 2003

    Digital Alert Systems founded by Bruce Robertson and Tom Wood.

  • 1960

    Monroe Electronics developed high-speed cue-tone decoders and cue-tone control devices for audio paths, pioneering work in CATV.

  • 1960

    Monroe Electronics developed the first emergency override system for CATV.

  • 1953

    Monroe Electronics founded by Robert E. Vosteen as a custom engineering house.

  • 1950

    Robert E. Vosteen invented a reliable, drift-free method for non-contact measurement of static electricity.

Products and positioning

Provider of advanced, software-centric Emergency Alert System solutions for broadcast, cable, and IPTV.

  • HALO

    Emergency alerting and messaging system.

  • 21CVAA Compliance

    Solutions for compliance with the Twenty-First Century Communications and Video Accessibility Act.

  • CATV Switching & Control

    Switching and control equipment for cable television systems.

  • UP•TRADE Program

    Trade-in program for upgrading EAS equipment.

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