Indianapolis’ Top Security Alarm Company


Home Security

Nelson Alarm provides best-in-class home security systems. Feel the difference with a local security system company in Indianapolis.

Business Security

Nelson Alarm provides best-in-class business security systems. Get hands-on care from a local leading security system company in Indianapolis.

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Indianapolis Security Systems

State-of-the-Art Security Systems

We offer a wide range of security systems that help protect you.


Keep an eye on what matters most, no matter where you are.


Get real-time information on who’s coming and going throughout your company.


When it comes to fire protection, response time is critical

Only the Best!

Protecting people and property for 30 years

Nelson Alarm prides itself on being a full-service provider of quality home security and fire alarm systems throughout Indiana. In need a residential home security or a small business security system?  Our motto says it all “Only The Best!”  and our team of technicians understand the importance of quality security system installation and repair. We keep an extensive inventory of security alarm system parts in stock in our office and on our trucks. Why? Because it ensures there are no delays in getting your system up and running in a timely manner whether it’s for a new security system installation, or a security system repair.

We are available 24 hours a day, seven days a week. Request a quote on your new security system and we’ll get you one quickly.

“Only the Best” is what we strive to provide every customer, every day. We have built our reputation for excellence by specializing in customer satisfaction.