About Us

The Sentinel Story

Proudly Securing Dallas-Fort Worth For Over 50 Years

Since 1968, Sentinel the Alarm Company has been family owned and operated and providing eﬀective security solutions to thousands of homes and businesses in the Dallas-Fort Worth Metroplex. Founded on principles of professionalism and personalized service, our staﬀ at Sentinel has maintained positive, long-term relationships with our customers for more than 50 years. We have a reputation for quality and history of excellence.

Let us help you find a solution to your security needs today!

What Makes SentinelSafe™ Security Different?

Family Owned & Operated Since 1968

Now run proudly by our second generation of security systems experts.

"No Worry" Maintenance Service

Our technicians are the best at maintaining security systems with no added stress to you.

Licensed & Insured Technicians

All Sentinel technicians are FBI background checked, drug-tested, and continuously recertified.

Local, State-Of-The-Art Monitoring

Our dispatchers have maintained a track record of uninterrupted excellence since 1989.

Easy Equipment Financing

Equipment financing can help you benefit from Section 179 tax advantages.

Security Association Leaders

We are active members in the top Dallas-Fort Worth alarm associations.

Dallas-Fort Worth's Trusted Security Systems Experts

See what our satisfied customers are saying

Sentinel the Alarm Company

4.9

review us on

Sandra Johnigan

22:08 05 Dec 22

Donnie knows our system - remembers important details and makes an extra effort to make sure all is well.

Lianne Bernstein

22:18 21 Oct 22

Everyone at Sentinel the Alarm Company is outstanding from scheduling, to their knowledge of old and new alarm systems, and assisting me with setting up my exterior cameras.

Michelle Gellman

01:33 11 Oct 22

Mike did an awesome amazing job at our home. We enjoyed his visit and appreciate his experience. Thanks so much to the Sentinel security team.Michelle and Steve Gellman

Linda Tunnell

00:05 16 Aug 22

Donny and the technician were super. My system is older and they took extra steps to find info on the system and reset it. Gave me perfect instructions and the system is working great. I have been a customer for over 20 years and remain a very satisfied customer. Linda Tunnell

Julie Nelson

15:49 28 Jul 22

More than 30 years and NO complaints!Great Job. Thank You

Tom Wymer

18:10 13 Jun 22

Our company recently retained the services of Sentinel to provide security and monitoring for our Dallas warehouse. Donny on the Sentinel team was our Technician and systems expert and provided exceptional service and subject matter expertise. Donny's work and Sentinel's dispatch service couldn't have come at a better time as shortly after our system installation we had an attempted break in. Our alarm system and notifications from Sentinel's best in class dispatch center prevented our business from having any losses and kept our inventory safe. I'm very pleased with Donny and the entire Sentinel team!

Christy Williams

22:20 07 Mar 22

Mike did a great job assessing my issue and coming up with creative solutions. He was very knowledgeable. He was also very easy to work with.

Jaycile Brannan

22:16 17 Jan 22

We have used Sentinel for 20 years. They have done a great job. They are very responsive to our needs and Donny has always done a fantastic job for us. We highly recommend Sentinel

Gaynell Kellum

12:41 20 Aug 21

Donny did a great job for us! He is so knowledgeable and personable. We couldn’t be happier with the service!

Anne Long

18:19 17 Aug 21

Chuck was great- the nicest man. Thorough and took the time to make sure I understood my new system.A positive experience from start to finish with Sentinel. Highly, highly recommended!

Dan Gold

21:21 24 May 21

Mike did a quick diagnostic and was able to fix my repair without any issues. He was courteous and very professional. I would highly recommend this company and Mike for any alarm issues.

Sandra Johnigan

22:08 05 Dec 22

Donnie knows our system - remembers important details and makes an extra effort to make sure all is well.

Lianne Bernstein

22:18 21 Oct 22

Everyone at Sentinel the Alarm Company is outstanding from scheduling, to their knowledge of old and new alarm systems, and assisting me with setting up my exterior cameras.

Michelle Gellman

01:33 11 Oct 22

Mike did an awesome amazing job at our home. We enjoyed his visit and appreciate his experience. Thanks so much to the Sentinel security team.Michelle and Steve Gellman

Linda Tunnell

00:05 16 Aug 22

Julie Nelson

15:49 28 Jul 22

More than 30 years and NO complaints!Great Job. Thank You

Tom Wymer

18:10 13 Jun 22

Christy Williams

22:20 07 Mar 22

Mike did a great job assessing my issue and coming up with creative solutions. He was very knowledgeable. He was also very easy to work with.

Jaycile Brannan

22:16 17 Jan 22

We have used Sentinel for 20 years. They have done a great job. They are very responsive to our needs and Donny has always done a fantastic job for us. We highly recommend Sentinel

Gaynell Kellum

12:41 20 Aug 21

Donny did a great job for us! He is so knowledgeable and personable. We couldn’t be happier with the service!

Anne Long

18:19 17 Aug 21

Chuck was great- the nicest man. Thorough and took the time to make sure I understood my new system.A positive experience from start to finish with Sentinel. Highly, highly recommended!

Dan Gold

21:21 24 May 21

Mike did a quick diagnostic and was able to fix my repair without any issues. He was courteous and very professional. I would highly recommend this company and Mike for any alarm issues.

24/7 Emergency Services Available

Speak With A Security Expert.

Please give us a call, or fill out this form and a Sentinel security expert will call you promptly.

Our expert sales and service staff is available during regular business hours from 8:00am to 5:00pm Monday through Friday to assist you. If you have an after-hours request, a technician will be dispatched to contact you, and respond to your location with a fully-stocked service vehicle if needed. Our goal is to keep your security systems and services operating 24/7.

Corporate Office

Local: (972) 644-6866

Toll-Free: (800) 275-6866

Monitoring Center

Local: (972) 644-9575

Toll-Free: (800) 713-6475

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