Since 1964, Sonitrol Security Systems Delaware has been the trusted name for providing home and business security systems in North America.
Delaware (302) 652-3060
Outside Delaware (877) 652-3060
Our Address 802 First State Blvd, Wilmington, DE 19804

    Since 1964, Sonitrol Security has been the trusted name for providing home and business security systems in North America, with a combination of human know-how and the latest technology. Our system is so sophisticated that we often catch criminals before they gain entry to our customers' facilities.
    Delaware (302) 652-3060
    Outside Delaware (877) 652-3060
    Our Address 802 First State Blvd, Wilmington, DE 19804
    NJ Address 60 West Mill St, Pedricktown, NJ 08067

    Need Support?

    Why Choose Us

    Providing Peace of Mind Unmatched Guarantees

    About Us

    Sonitrol Security of Delaware Valley was founded in May of 1999, by Karl Ottosen and Joe Allen. Karl has been the owner of Sonitrol of Central New Jersey since 1985. Joe has been in the security industry since 1974 and started as a technician at Sonitrol in Philadelphia in 1980 and then moved into sales and sales management. Joe and Karl combined forces and started the Delaware Valley dealership which covers all of Delaware, Southern New Jersey & Philadelphia. Sonitrol grew quickly and in 2003 Sonitrol National Dealers Association awarded our dealership “Rookie of the year” as the fastest growing new franchise.

    Our Customers

    Sonitrol Alarm Company is in over 180 cities throughout the United States, Canada and Great Britain, providing comprehensive security solutions for over 45 years. We provide a unique audio intrusion system with integrated access control to eliminate false alarm and verification of every alarm before we dispatch law enforcement agency.

    Commitment to Service

    We offer a Commitment to Service which includes a $5000.00 warranty, 6 month satisfaction guarantee, 4 hour service response and a No False Alarm Guarantee. Sonitrol is recognized by most police departments in Delaware and South Jersey as the leader in integrated verified security services. This technology allows our highly trained operators to hear, verify and report the sounds of a break-in or hold up inside of a building as they are occurring. That unique technology, the profession work ethic of our service personnel and our reputation for reliability, gives Sonitrol the highest documented apprehension rate in the industry.

    Our Mission Statement

    Our Mission Statement “Building Relationships for Life by Exceeding Expectations”. Here are a few of the relationships we have built on since 1999. Underwood Memorial Hospital, Morey’s Piers, Winterthur Museum, Lewes Public Library, Standard Distribution, Goodwill Industries of Delaware and Delaware County, Christina School District, Wilmington Friends School, Harrison School District, South Harrison School, Clearview High School, Kingsway High School, Hammonton High School, Alloway School, Salem Votech, and the Town of Middletown, Auto Dealerships like, Lexus, Honda, BMW, Porsche, Jaguar.

    The Sonitrol Story

    A Heritage of Technical Innovation
    The company known today for detecting burglars had its roots in pest control of a different sort in the late 1950s.
    Robert Baxter, of Anderson, Indiana, installed microphones within the walls of a building to listen for termites and pinpoint their location. Baxter invented other sound-related devices, too. On June 16, 1960, he incorporated “Sonitrol”, from the words sound and control, to manufacture and market his innovations.
    Law Enforcement Legacy
    In 1963, Baxter met Al Cronk, a local police officer who owned an alarm company. Cronk was frustrated with systems that seemed to let the perpetrators get away. He hired Baxter, the inventor, to develop new ideas for the alarm company. Baxter responded with the audio sensor, and Sonitrol was born as a security company.
    Success Spreads
    Today, Sonitrol provides tailored local service in approximately 180 cities throughout the United States and Canada. Now the third largest commercial security company in North America, Sonitrol is the clear leader in verified electronic security.

    Security with a Sound Advantage: Alarm Verification

    Sonitrol provides businesses with a single source of integrated, state-of-the-art security solutions for intrusion, video, access and fire, all backed with professional monitoring by experienced, trained personnel.
    Our technology sets us apart. The ability to verify an alarm event in real time gives Sonitrol unrivaled credibility with local law enforcement. That is a key advantage as a growing number of municipalities pass Verified Response regulations requiring verification that an intrusion is actually taking place before police will dispatch personnel to the site.
    Sonitrol has the best apprehension rate in the industry – and the fewest dispatches for false alarms. In fact, in January 2006, Lehman Brothers named Sonitrol “the leading alarm verification company.” And our integrated components allow us to customize a solution that can expand easily as your needs grow.

    Police Departments Trust Sonitrol

    Why? Because Sonitrol alarms are reliable. The false alarm rate of conventional systems can reach 98 percent. Sonitrol’s ability to immediately verify an alarm keeps our false alarm rate low. Sonitrol is able to detect a break-in while an intruder is still attempting to gain entry – no matter where the entry point is. Sonitrol signals are monitored 24 hours a day, 7 days a week by highly trained professionals. As soon as an alarm signal is received, an operator begins to listen to live audio from your building. No other system can give police such accurate, up-to-the minute information as they respond to the scene. The result? Sonitrol has a high apprehension rate, low false alarm rate, and increased safety for police officers.
    Conventional Security Systems:

    • Partial coverage, from limited points of entry.
    • Activate after break-in, with intruder inside.
    • Most call facility to verify break-in, then call you to see if they should send police.
    • Most use audible alarms which alert intruders and make it easy to test the system.
    • Cannot tell the difference between real trouble and false alarm.
    • False alarm rate of up to 98%.

    The Sonitrol Difference:

    • Complete coverage from any point of entry.
    • Detection while intruder is still attempting to gain entry.
    • Sonitrol operators confirm with live audio immediately, call police and stay in contact to help with apprehension.
    • Silent alarm leads to Sonitrol’s high apprehension rate.
    • Highly trained operators listen to live audio, recognize non-threatening noises and reset system.
    • Sonitrol has a lower number of false alarms, and a false alarm guarantee.

    Alarm Systems

    Sonitrol provides the modular, scalable alarm systems Delaware trusts.
    Crime is rising. More than 700,000 commercial buildings were burglarized in 2005 and employee theft is estimated to exceed $10 billion a year. Fire and explosions cost businesses another $2.3 billion annually, and they kill or injure thousands of workers. Workplace violence, lawsuits and false insurance claims can also put a significant strain on your business and security resources.

    Traditional security systems aren’t up to the job. One out of four forced entries today are through unconventional entry points, so they circumvent conventional perimeter protection. What’s more, more than 90 percent of alarms are false. False alarms take valuable law enforcement, fire and EMS personnel away from real emergencies and make your alarm system less credible—reducing response time. Many jurisdictions now levy fines for excessive false alarms—and a growing number won’t respond without some form of alarm verification.

    Sophisticated security tailored to the needs of your business
    Sonitrol offers modular, scalable security solutions—including our unique audio detection and verification technology—for commercial, retail, and industrial applications. Our national network of professionals provides service to more than 100,000 customers across North America. For nearly 50 years we’ve built our reputation on meeting a broad spectrum of security requirements with quality service and unparalleled performance.

    Industries We Service

    Credit Unions




    Place of Faith

    Distribution Center

    Government Facility

    Health Care Facility

    What's Your


    Every business needs some form of security. We have a custom solution to meet your security needs.

    Learn More
    Free Business Security


    A free service to help assess your security needs. A free service to help assess your security needs.

    Learn More
    Are you a current


    If you need assistance with your Sonitrol system, let our Customer Support team know!

    Learn More

    About SONITROL

    Since 1964, Sonitrol Security has been the trusted name for providing home and business security systems in North America, with a combination of human know-how and the latest technology. Our system is so sophisticated that we often catch criminals before they gain entry to our customers’ facilities.

    The cornerstone of our success is our unique impact-activated, audio-based intrusion detection system. Our technology allows us to verify the threat posed by an alarm event before we call the police. That way, we minimize false alarms, create a faster police response, and actually apprehend the criminal! No other business security systems can compete with our solution. Serving Delaware, Southern NJ and Philadelphia.

    Contact Sonitrol Today