About Us

One Company: All Fire, Security, Low Voltage, and Electrical Needs

ATSI has a reputation for personal and prompt service, technical expertise, superior training and support and unsurpassed reliability. We are the leading provider of the highest quality voice, data, video, fire alarm, access control, and security system services in the Chicagoland area. At ATSI we are a team of specialized professionals in whose combined education, experience and expertise come together to create custom strategic technology solutions. We specialize in design, project management, and installation of electronic systems for a wide range of applications.

We have earned our reputation of being an electrical, low voltage, fire, and security contractor with high integrity, quality, safety best practices, and prompt responsiveness to customer needs. Our success is due largely to the fact that customer satisfaction has remained our top priority over the years. In fact, we have built our reputation on it, as our clients will attest. We pride ourselves on reliable service and outstanding support.  Contact us today to find out more!

Customer Focused

ATSI is focused on meeting and exceeding the needs of our customers.

Project Oriented

No job is too big or too small for us to tackle. Tell us about your next project!

Quality Products

Provider of the highest quality system services in the Chicagoland area.

Outstanding Support

Highly skilled technical support staff with prompt response to customer needs.