About Us

Leading The Security Industry
Since 1983


We're a full-service security systems contractor

ACT is a full-service security systems contractor specializing in state-of-the-art burglar alarm systems, fire alarm systems, video surveillance systems, and access control systems for both homes and businesses. We currently service several thousand residential and commercial customers all over New England, as well as New York, New Jersey, and Pennsylvania.

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 five 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.

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


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



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