Security Instrument is Delaware's largest full-service independently-owned security company, serving thousands of customers across Delaware, Maryland, New Jersey, and Pennsylvania with home and commercial security, video surveillance, and smart home automation. The company provides 24/7 alarm monitoring, design, engineering, and ongoing support for homes and businesses, including enterprise-grade, multi-location security platforms and video verification to prevent theft and property damage. With more than 60 years of experience and a strong focus on customer service, Security Instrument partners with leading technology providers to deliver reliable security solutions and centralized service.
AI named Security Instrument in January 2026.