Here's Why Our Customers Choose Sentry Security

About Us


  • One of the Chicagoland area's largest independent security companies
  • Chicago home security is what we do best
  • Personal approach to home security
  • Technical team with broadest capabilities

Learn more about Sentry Security

Activate/Switch Systems


Learn more about alarm systems

Questions To Consider

Make sure you have the:

  • Ability to know your business or home security system is working
  • Confirmation that the servicing company is the same as the installation company

I want to know more

Sentry Security Features

See Why Our Customers Love Us!

As Chicago's hometown security company we know our customers. We were established over 25 years ago, and have come a long way since then! BBB Accredited Business since November 1, 2007.

See What Our Customers Are Saying About Us!

2nd year as an EBSCO Research Best Pick™

"Sentry Security seeks to create a relationship with all customers by taking a personal approach when interacting with them. Our goal is to create delighted customers. We focus on doing the job right, being fair, understanding and developing a strong relationship with our customers."

See More of Our Customers' Reviews!


icon-angies"The service man was very polite and efficient. The job was done in the amount of time. They predicted it would take. We are very satisfied."

"They did a terrific job with the estimate and their customer service is excellent and very responsive.
After using ADT for many years, the personal service has been very nice."

Read More Reviews on Angie’s List