*The Angi rating for Home Security System Service companies in Keymar, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
*The HomeAdvisor rating for Home Security System Service companies in Keymar, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
Last update on May 30, 2026
Serving Keymar, MD and surrounding areas
Approved (Corporate)
In business since 2010
Free estimates
Emergency services offered
"SafeStreets security system is incredibly reliable and easy to use. The app is intuitive, and the home automation features are a game-changer. I love being able to monitor my home from anywhere. Great service all around."
+1
Serving Keymar, MD and surrounding areas
Approved
In business since 1988
Free estimates
Emergency services offered
"We moved to Chevy Chase MD. I contacted three different security companies. By far Ultra Guard Security was the best. Andy was very knowable about security systems and not pushy at all. If looking for security system give them a call. You will be pleased."
+21
Serving Keymar, MD and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1874
Free estimates
Emergency services offered
"ADT has exceeded my expectations! The system is reliable, the app is easy to use, and the customer service team is always helpful. I appreciate the environmental monitoring features, which go beyond just security. Knowing my home is protected 24/7 is priceless. I highly recommend ADT to anyone looking for a trustworthy security provider."
+35
Serving Keymar, MD and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"Modern Systems did an excellent job on installing and upgrading my security system. The technicians were very professional and respectful of my homework. The salesman as extremely knowledgeable of the product and didn't pressure me in making any quick decisions. I would highly recommend Modern Systems Integration if you are looking for home or business security solution."
Serving Keymar, MD and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
We offer solid experience in commercial and residential audio/video distribution. This includes dedicated theatre and/or media rooms; security cameras and lighting control. We've established a top-notch reputation in the greater Washington, D.C. area.
+25
Serving Keymar, MD and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Very professional company. They make sure you are happy at all times-and explain the entire process. Their camera system have given me extra security at night time Would highly recommend."
Serving Keymar, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2015
Free estimates
Emergency services offered
"I had issues with 2 lights and circuit breaker in my home and JA Electrical were a godsend. I heard back from them within minutes of placing online quotes in my area. I was able to get a tech, Antonio, out to my home the same day. He worked ho*** ** getting my issue resolved and he succeeded. He's very professional, timely, and I would highly recommend him and the company to anyone having issues."
+25
Serving Keymar, MD and surrounding areas
Approved (Corporate)
In business since 1998
Free estimates
Credit card accepted
Protect Your Home is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide. Since we emerged in 1998, we've grown from a company of few to having over 2,000 high performance team members, three locations in Indianapolis, a sales center in Kentucky, and over 128 field branches across the countryand we're still growing.\n\nFor nearly 20 years, Protect Your Home has partnered with ADT®, the #1 name in home security. Today, with our national reach, we are one of ADT's biggest partners and the only partner to be designated as an Authorized Premier Provider.\n\nOur commitment to serving others combined with our projects, events, and culture contribute to the development of our team professionally, personally, and financially.\n\nIt's our mission. It's who we are. It's our legacy.\n
Serving Keymar, MD and surrounding areas
In business since 2007
Free estimates
Emergency services offered
"I self installed our FrontPoint system. It went smoothly and my questions were answered efficiently and professionally by the FrontPoint staff. I would highly recommend FrontPoint as a home security system."
Serving Keymar, MD and surrounding areas
In business since 2007
Credit card accepted
"All went well, up and running in no time at all. It is very user friendly, you don't need a PHD to operate this system and we feel secure and safe knowing that we are being protected 24/7.
"
+16
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