Great company
Great company, they always deliver what they promise.
By Arthur R.
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.
39 approved reviews, newest moderated first
Great company, they always deliver what they promise.
By Arthur R.
initial person on the phone (Gina) made all very easy. the technician was thorough and a true expert.
By Robertson R.
Our installer Dan was extremely capable and very patient with all our questions. We really felt like we understood how to best use our system by the time he left.
By Terry
Easy to work with and did a great job on the installation.
By RB R.
Excellent experienced installer handled our new location perfectly
By Rose F.
Excellent, trust-worthy security service.
By McHone R.
Don did an excellent job upgrading the system.
By Szalay R.
Very professional. Very diligent until the job is done
By Ray K.