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We honestly don't turn our alarm on very much, but when we do, it is easy to use and we have had no issues.
By Deutsch R.
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
39 reviews
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Sentry Security specializes in the installation, service and monitoring of security services. As Chicago’s single-source solution for security needs, Sentry offers the most comprehensive range of services to deliver customized protection solutions and ease-of-use convenience. And, as Chicago’s leading independent security company, we have the local resources necessary to give you peace of mind- confirmed by the consistent high ratings from our customers.
Sentry Security (sentrysecurity.com) has 39 customer reviews on The Fair Hearing, with an average rating of 4.3 out of 5.
39 approved reviews, newest moderated first
We honestly don't turn our alarm on very much, but when we do, it is easy to use and we have had no issues.
By Deutsch R.
You have taken care of my business perfectly for 11 years- Thank You!
By The Leigh Gallery, I.
The service provided was prompt and efficient.
By Board Of Jewish E.
We are very happy to be dealing with Sentry security!
By American Hotel R.
The in house service was very good, but my experience with questions regarding additional services never went to anywhere.
By HTL
They have contacted me immediately when issues happened - No hesitation. Always available by phone and are there to help.
By Murdock R.
We have had no issues until the other day when my wife tried to set the system and screwed it up prompting the alarm and a call to me at a remote location. The person who called kept asking for the password on the account to shut the system down and prevent a police response. I had no idea what the account password was and could not prevent the police response. I then got a call from my wife, who was panicking. She does not usually set our alarm to leave the house and screwed it up. She had tried to call the company and the number was not covered at the time. I immediately told her how to reset the keypad to turn off the alarm. I called back the alarm system number that had called me and found out that the password was actually the "keypad" pass code, which of course I knew. If this was explained at the time of the first call, the whole problem could have been averted.
By Klang R.