Alarm One
Why Alarm One?
24-Hour Monitoring
Homeowners' Discount
Custom Systems
Licensed Staff
Monitor Existing System
Home Systems
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alarm one

Alarm One


truckAlarm One, Inc., provides you and your family with state-the-art alarm systems and service. For nearly a decade, we have satisfied our customers' needs by listening to and understanding their security needs.

We install and service burglar, fire, medical, central vacuum, intercom, high- and low-water detection, high- and low-temperature detection, nanny cam, and home-theater systems, to name a few. Whether your requirements are simple or complex, you can be sure that our licensed and insured technical staff will explain the options available for you. We pride ourselves on our ability to respond to your questions day or night, 7 days a week.

Depending on your individual situation, we can install wired or wireless systems to be compatible with your home construction. Once we agree on the best protection for you, we will provide a written description of your system and a firm price for its installation and monitoring.


Emergencies arise, and that's where you will find the difference between Alarm One and other larger companies, including the national ones. Our geographic area is limited to Maryland, DC, and Virginia. We have the personnel and expertise to respond immediately to your requests.

With the history and ability to man large or many jobs at one time, you can rest assured that you will have the peace of mind that you and your family deserve. Our fleet of vehicles and personnel are available 24 hours a day.