About Sentry Security

We provide system solutions to help businesses stay in business

Comprehensive, cutting-edge integrated security systems to protect your people, business and assets for years to come. Choose Sentry Security for ease of use and peace of mind so you can get back to what’s most important: your business.

Sentry Security is the first choice for integrated security services that deliver smart, connected solutions to keep your business safe, deliver critical information in real-time, and help you mitigate future risks. Prepare for the unexpected and rest assured with our 24/7 responsive security professionals, so you never miss a thing.

We offer the largest continuum of services and will partner with you to design and implement scalable security systems to address your toughest challenges. Our integrated hardware-software approach will ensure that all systems are working seamlessly – whether across a facility, multi-building campus, or multiple sites.

Reduce liability and increase operational efficiencies by working with Sentry’s highly experienced security technicians. We combine vast industry knowledge with unparalleled visibility into your technology to leverage best practices, whether to build comprehensive security systems, troubleshoot and resolve issues, conduct routine preventative maintenance or perform code-mandated inspection services.

Protect your business and contact us for access control systems, intrusion detection, video surveillance, fire detection, perimeter lighting, and more.

Sentry Overview

  • Provides recurring alarm services on 7,000+ installed systems in greater Chicagoland
  • Majority of recurring customers are Commercial, Industrial and Corporate accounts
  • Largest locally-owned security company; closed 16 acquisitions from 2006-2017
  • Offers customers an integrated sole-source solution: one phone call for all security needs
  • Gets to YES to make a system work for a customer; Sentry doesn’t say NO- we try to work with your existing system
  • Sentry focuses on the long-term relationship with the customer by providing recurring, value-added services

Our market-leading knowledge is built on the experience of the professionals and technology created from the combination of the following mergers:


Sentry also monitors and performs service on the following lines:

our clients stories

Sentry provided us an enterprise-level security solution for our corporate office locations.

With Sentry, I can manage and monitor all my business locations remotely.

Sentry was able to tailor a custom solution for our unique security needs.