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



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.

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.

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: “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.

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.