Your home is your castle, protect it 24/7 with real-time monitoring by licensed professionals. Call today to learn about options tailored to fit your needs and budget. We provide complete, customized video security installation in Chicago, IL and surrounding areas that protects your property, assets and employees. We'll ensure that you have full coverage and 100% peace of mind. Now more than ever, security is a grave concern in our schools. An integrated security solution can help keep children safe, working to ensure no one with unauthorized access enters a school or classroom.

Greatline Communications is your one-stop Security Integration and Structured Cabling Company. We are THE Low Voltage solution provider for CCTV, Alarms, Access Control and more. We enjoy the opportunity to help our customers find a solution to fit their needs regarding safety and security to protect what's important. Since 1992, we've been providing high quality and efficient service to clients. We are a union contractor and proud of our IBEW Certified Electricians that are the best trained in the business.

What's new?

With a CCTV security system, you can monitor whatever you choose. Set up cameras at the perimeter of your property and monitor visitors, inventory or whatever you'd like with a single employee watching a central monitor.

Posted on Mar 13, 2021  •  Facebook

If you have decided that you want to better protect your property with a security alarm system, you are not alone. After a decade of rising home burglary stats, homeowners are investing in the protection of their personal property.

Posted on Mar 10, 2021  •  Facebook

Law enforcement officials in the United Kingdom were the first to see the connection between CCTV technology and security, installing cameras throughout London in the 1960s to monitor crowds during rallies and other events with large crowds.

Posted on Mar 05, 2021  •  Facebook

When your fire protection system undergoes a required inspection, the fire marshal will tag the suppression system and the alarm system; the color of the tag indicates the condition of the system and what, if any services, need to be performed. Red tags indicate repairs are needed.

Posted on Mar 03, 2021  •  Facebook

It’s important to remember that your security system doesn’t always have to focus only on the inside of your commercial building. If there’s been a rash of crime occurring in the parking lot after hours, you may want to consider outdoor surveillance cameras.

Posted on Feb 26, 2021  •  Facebook

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