Very responsive
My encounter this time was very brief and you were responsive
By Midwest Gastro A.
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
39 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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.
Showing 28 reviews with 5 stars · Clear filters
My encounter this time was very brief and you were responsive
By Midwest Gastro A.
Excellent service!
By Gelato G.
We have no problems with the system. If the alarm does go off, there is a quick response from the company.
By Rutland Township B.
EXCELLENT COMPANY AND SERVICE BEEN DOING BUSINESS FOR MANY YEARS
By Schmaus Register C.
Sentry has always been very responsive and I am grateful for their great customer service.
By PHMC
Sentry is a full service alarm provider. I have had no issues with installation or service for the past two years.
By Lake Forest R.
Technician was able to tie into our existing wiring and get us up and running within two visits.
By Whiteco I.
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.