Please allow us to introduce ourselves. Fairfield County Alarm Service, Inc. is a State of Connecticut licensed full service Alarm Company offering: Design, sale, installation, twenty-four hour monitoring, upgrades, and service of alarm systems in Fairfield County, CT.

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FCAS, Inc. currently provides state of the art security for over four hundred Darien homes and businesses. Our local accounts include: The Darien Community Association, The Darien Historical Society, The Noroton Fire Department, The United Methodist Church of Darien, and Grove Street Plaza.

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FCAS, Inc. offers monitoring of alarm signals by connection to our Underwriters Laboratories/Department of Defense approved central station via telephone digital communicators and high security long range radios.

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We are a family-owned alarm company that has been providing top-tier security solutions since 1986. Founded by Doug Heitsmith, our business has grown through dedication, expertise, and a commitment to customer service. Today, Doug's sons, Jeffrey and Peter, continue the family legacy, ensuring that our values of reliability, integrity, and excellent service remain at the heart of everything we do. With offices in Darien and Easton, we are ready to respond to your service requests 24/7, 365 days a year. At FCAS, Inc., we take pride in protecting what matters most to you.

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All of our systems are custom designed and installed in a concealed fashion.  Underwriters Laboratories listed equipment, National Burglar and Fire Alarm Association and factory trained installers provides you with maximum dependability and insurance discounts. FCAS, Inc. WARRANTIES EACH SYSTEM WE INSTALL FOR TWO FULL YEARS.​

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We would be pleased to perform a NO COST security survey of your home or business.  We can be of service to you. Please give us a call.​

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