(303) 452-2000 alarmoneinc@aol.com
Denver, CO



Protect your home or business 24/7 with world-class security solutions from Alarm One!

Our company has been a trusted source of world-class security solutions for residential and commercial customers in the Greater Denver area and beyond since 1985.

Whether you are in the market for a new security system or you need to upgrade your existing equipment, Alarm One! can be trusted to deliver the right security solution, on-time and on-budget, with the maximum level of efficiency and convenience.

The professional security experts in our Denver office are available to assist you from 8:00AM to 8:00PM MST, 7 days a week. Call 303-452-2000 to schedule a free on-site estimate for your home or business today!


Our Services


Alarm One!

We’ve built a solid reputation as a high quality security company, through our expert knowledge, industry experience and ongoing commitment to customer service. Protect your home or business 24/7 with world-class security solutions from Alarm One!

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Our Clients

“Great service, value and attention”

Michael Bennet

U.S. Senator for Colorado

“Great to deal with a contractor who is customer oriented”

The Ogden Theatre