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Metro Detroit’s Best Security Monitoring Systems

Since 1930, Guardian Alarm has been the trusted source of home and commercial security systems for countless Metro Detroit families and business owners.

*FOR A LIMITED TIME, NEW CUSTOMERS CAN RECEIVE A FREE VIDEO CAMERA OR DOORBELL (UP TO A $249 VALUE)!

*New residential customers only. Cannot combine offers. Monitoring agreement required. Some restrictions apply. 

Smarter home security

Guardian Alarm’s fully-encrypted smart home alarm systems monitor points of entry or detect motion with innovative tools that keep your home safe and convenient. You can control your system from the alarm panel or your mobile device to arm/disarm or to view your cameras.

Using our local 24/7 monitoring center, Guardian Alarm will alert your local police, fire, or EMS and dispatch immediately in the event of smoke or carbon monoxide. You can even have your home monitored for any water detection to save you thousands of dollars in repairs.

Drone shot of a neighborhood protected by Guardian Alarm wireless cameras and security system

Protecting our neighbors

Headquartered in Southfield means that our team lives and works in the Metro Detroit communities that we serve. Making you and your neighborhood our highest priority.

We’re also actively involved with community organizations in the Detroit area to help give back, engage with those living and working around us, and build lasting partnerships.

Guardian Alarm shield protecting your home and business

What is the Guardian Alarm difference?

#1 Security Provider in the Midwest

Since 1930, Guardian Alarm has grown to become one of the largest security providers in the Midwest, working every day to help protect families and businesses.

24/7 Security
Monitoring

From the first signs of detection to dispatching authorities, our monitoring specialists are specially trained to help detect danger before it’s a disaster.

Ongoing Maintenance
& Support

Our technicians can repair, upgrade, test, and maintain to keep your security system working properly for years to come.

Professional
Installation

Our certified technicians test and ensure your system is functioning properly to provide years of dependable service.

Contact your local security expert

Call 833.243.5645

To start protecting you, your family, and your home, call Guardian Alarm today or fill out the form.

In Our Community

Staying involved and giving back

Guardian Alarm cares about the communities we serve. We’re actively involved with local chambers and organizations to help give back, engage with those living and working around us, and build lasting partnerships. Each year, we encourage our employees to spend time volunteering, giving back to their favorite non-profit organizations, and engaging with their community.

Official provider of Project Green Light

Project Green Light started in 2016 as a crime intervention tool. It originally targeted gas stations since they were seen as crime hot spots but has expanded to include fast food restaurants, churches, apartment buildings and more. Guardian Alarm supports Project Green Light by providing the required indoor and outdoor security cameras that transfer live footage from local businesses to the Detroit Police Department.

Detroit Project Gren Light

Where you can find us

Metro Detroit Headquarters

20800 Southfield Road
Southfield, MI 48075

Protecting your neighborhood and beyond

  • Detroit
  • Troy
  • Southfield
  • Farmington Hills
  • Bloomfield Hills
  • Birmingham
  • Livonia
  • Rochester Hills
  • Auburn Hills Royal Oak
  • Novi
  • Warren
  • Dearborn Heights
  • Brighton
  • Sterling Heights
  • Plymouth
  • Madison Heights
  • Canton
  • West Bloomfield
  • Ferndale
  • Wixom
  • Port Huron
  • Marine City
  • Huntington Woods
  • River Rouge
  • Clinton Township
  • Harrison Township
  • Howell
  • Northville
  • Lake Orion
  • Keego Harbor
  • Riverview
  • Taylor
  • Allen Park
  • Belleville
  • Clawson
  • Wayne
  • Westland
  • Washington
  • Oak Park
  • Macomb
  • Dearborn
  • Roseville
  • Milford
  • Saint Clair Shores
  • Commerce Township
  • Waterford
  • Redford
  • White Lake
  • Center Line
  • Highland
  • Inkster
  • Farmington
  • Utica
  • Pontiac
  • Hazel Park
  • Hamtramck
  • Romulus
  • Marysville
  • Mount Clemens
  • Wyandotte
  • Rochester
  • Grosse Pointe Farms
  • Lapeer
  • Metamora
  • Clarkston
  • Grosse Ile
  • Eastpointe
  • New Baltimore
  • Ecorse
  • South Lyon
  • Harper Woods
  • Melvindale
  • Lincoln Park
  • Trenton
  • Algonac
  • Grosse Pointe
  • Fraser
  • Romeo
  • Berkley

Work with a name you can trust

To start securing what matters most, call Guardian Alarm today.

Over 90 years of trusted service

Great food,great service!!
Wendell Raby
Wendell Raby
23:08 29 Dec 19
Love the phone app,
Dan Usauto
Dan Usauto
14:45 08 Oct 22
A very good place to work at
nadja bradley
nadja bradley
21:26 03 Mar 20
I received a knew and it had to program all over again
Miguel Brooks
Miguel Brooks
17:13 26 Jul 22
Guardian has been my home security for years. Been very happy with service
theresa ulrich
theresa ulrich
15:26 22 Sep 22
I put eggs on the stove to boil forgot them and went to the movie. When the house filled up with smoke and Guardian Alarm couldn't reach me they dispatched the fire department. I will be forever grateful for their quick response. It could of been a disaster. The smoke alarm is always monitored even when house alarm is not set. That feature alone is worth cost of system..
Barbara Clark
Barbara Clark
14:35 09 Sep 19
I've had Guardian Alarm since 2009. They have always had first class customer service. Highly recommend.
R Ray
R Ray
13:06 25 Aug 22
I have been with Guardian Alarm for many years. They monitor my security alarm for my home. I have always received excellent service from customer representatives, the sales department and the service department. I truly appreciate their promptness and customer focused attitude.
Alma Sykes
Alma Sykes
19:07 19 Aug 22
The tec came in and changed the key pad
Joseph Gregory
Joseph Gregory
16:01 01 Oct 22
It was great
Charlie Gross
Charlie Gross
16:12 04 Sep 22
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