About Us

Leading The Security Industry
Since 1983

YOUR SECURITY IS OUR TOP PRIORITY

We're a full-service security systems contractor

Alarm Computer Technology is a full-service security systems contractor. We specialize in state-of-the-art burglar alarm systems, fire alarms, CCTV systems, access control, and audio systems. Currently, we service several thousand residential and commercial customers all over New England, as well as in New York, New Jersey, and Pennsylvania. Helder Lemos, the founder, and the president created ACT in 1983. With almost 36 years of experience in the security industry, and using our extensive product knowledge, and customer-oriented approach, we will design a system that will meet all of your security needs, all while keeping it affordable.

We are a licensed systems contractor and a member of the National Burglar and Fire Alarm Association. In addition, we employ NBFAA-certified technicians. That way you can rest easy knowing that each system we design and install meets the industry’s highest standards for quality and craftsmanship.

However, what really separates us from our competitors is our responsiveness to our customers’ needs. Nearly two-thirds of our business coming from repeat clients. That is because we have created a winning customer service formula! As a result, it has made our customer base one of the most loyal in the security industry. High-quality products, cutting-edge technology, expert installation, and exceptional customer service, that is our mission and our pledge to each customer. Call ACT today for all of your security system needs!

Burglar Alarm Systems

Fire Alarm Systems

Video Surveillance Systems

Access Control Systems

35+ Years Experience In The Security IndUstry

Found and President Helder Lemos created ACT in 1983. We have nearly thirty six years of experience in the security industry. Our unmatched product knowledge and customer-oriented approach has earned us our trusted reputation.

One of the best

Residential & Commercial Security Systems

ACT provides everything you need to keep your home & business safe and secure.

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Fully Licensed Systems Contractor

We are a licensed systems contractor and a member of the National Burglar and Fire Alarm Association. In addition, because we employ NBFAA-Certified technicians, you can be assured that each system we design and install meets the industry’s highest standards for quality and craftsmanship.
No matter what your alarm is, we support it.

National Burglar and Fire Alarm Association

CERTIFIED TECHNICIANS

Meeting All Of Your Security Needs

What really separates us from our competitors is our responsiveness to our customers’ needs. With nearly two-thirds of our business coming from repeat clients, we have created a winning customer service formula that has made our customer base one of the most loyal in the security industry. High quality products, cutting-edge technology, expert installation and exceptional customer service… that is our mission and our pledge to each and every customer.

High Quality Products

Cutting-Edge Technology

Expert Installation

Exceptional Customer Service

CLIENT TESTIMONIALS
"Good Afternoon Ryan, Thank you so much for all of your help getting the camera's installed and set up for us to view. I just wanted to take a second of your time to let you know how AWESOME the guys were who did the install. All three of them were extremely helpful. They did a great job with the install. They cleaned up everything that they used ... wires, boxes, packaging, and took everything away. They had a small problem with the install and were able to come up with a solution very quickly and came back to correct the problem. I cannot say enough good things about the crew. It was very nice to have professional people come out and handle all the little things that came up and handle it in a very timely manner. I appreciate all of your help as well. I definitely know that I made the right decision for my company when I chose you and your company to service our warehouse."
Barbara
BarbaraAtsalis Brothers Painting Co.
“We would like to express how happy we have been with our transition to ACT. Ryan was very responsive when we contacted your company. He met with us the week of our call and our alarm was changed to your company one week later. Jeff was outstanding! We had had issues with our phone line and alarm for the past nine months. With a quick look, he identified the issues and was able to correct all of our home phone line/alarm troubles. We are so appreciative. Although we do not always pass along these types of messages, we just want you to know that we are very happy that we have changed our monitoring services to your company.”
Barbara and Ed Caneul
"I just wanted to let you know that we were very pleased with the work Gil did on the initial installation. He was very thorough and spent time making sure we were comfortable with operating the system. He worked all day and didn’t even stop for lunch. Also very neat with no need to clean up after. Overall, a great job! Manny came by to add the other flood detector and didn’t leave until everything was 100%. One of the window contacts was not functioning right after the addition of the second flood detector so he had to replace the contact."
David AffonsoJanuary 17, 2019
“The system in my home is working perfectly. I love the alarm.com app and getting rid of the phone line has fixed all communication issues. Thanks again!”
Patrick RinkJanuary 14, 2019
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READY TO SECURE YOUR INVESTMENT?

ACT provides everything you need to keep your home or business safe from break-ins and theft
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