About Nelson Alarm

Nelson Alarm Is Proud To Be Your Indianapolis Security System Company

Since 1991, Nelson Alarm has become the go-to Indianapolis Security System Company for homes and businesses. Starting with the motto, “Only The Best,” we aim to give you a customized security system that’s intuitive to operate and powerful enough to fully protect what you love. And since our team all live and serve in the local Indianapolis area, we’re not only protecting our clients — we’re also protecting our friends and neighbors.

At Nelson Alarm, We Strive for 3 Core Pillars:


We Want To Exceed Your Expectations


We Are Here When You Need Us



“Only The Best”

A Customized Approach To Security Systems In Indianapolis

Having installed security systems in Indianapolis for the last 30 years, we know that Indiana homes and businesses are not one size fits all. Some homes just need a basic system of door and window alarms, while others require security cameras, motion sensors, and home automation. Business security systems in Indianapolis are equally diverse and may require asset protection or temperature control. And everything comes with 24/7 alarm monitoring to quickly respond to emergencies.

And as security systems evolve, so does Nelson Alarm. Now we offer full home automation systems that allow your home to be not only safe, secure, and energy-efficient. Our technicians are always on the cutting edge of security, so when new products — like smart locks or doorbell cameras — come online, you know that we will know exactly how they fit into your security plan.

Nelson Alarm Service Trucks

We’re Indianapolis Strong, Just Like You

Unlike some security companies, Nelson Alarm is entirely locally owned and operated. With a home base on East 55th St., we’re here to provide 24-hour service to the entire Indianapolis area. You’ve probably even seen our yard signs or service trucks around town! We understand the importance of living in a safe and secure home and community, because it’s our community, too.

The Nelson Alarm family takes pride in supporting a variety of local causes including Hendricks Regional Health Foundation, Ronald McDonald House, Indianapolis Firefighters, The Heroes Club, and St. Vincent De Paul. We’re also active with local police agencies, school contributions, and various youth sports leagues.

Learn More About How Nelson Alarm Can Help You

Our team of experts are ready to give you “Only The Best” in a customized security system designed to meet your personalized needs. Give us a call at (317) 255-2125 or fill out the form for a free quote. We’d love to show you why we should be your Indianapolis Security System Company!

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