Experience The Benefits Of Switching To Chicago’s Best Alarm Company.

Searching for a security provider that goes above and beyond?

Whether your previous company wasn’t meeting your expectations or you’re eager to switch to a local, family-owned company, Alarm Detection Systems, Inc. is ready to perform your alarm system takeover.

Activate Your System

We’re Determined to Exceed Your Expectations With Unbeatable Customer Service 24 Hours a Day, Seven Days a Week.


At ADS, we specialize in alarm system reactivation and takeovers. We can reactivate your alarm system, monitor it 24 hours a day, provide maintenance throughout the life of your system, and even complete an alarm takeover from your previous provider. We’re so confident you’ll appreciate our services that we’re waiving the $75 activation fee for a limited time. 

The unrivaled security you’ve been seeking is only a brief phone call away. Contact us now at 630-844-5300.

Four Unbeatable Reasons to Choose Alarm Detection Systems. We:

  • Are a family-operated company that’s large enough to provide around-the-clock service, yet small enough to care about your individual needs
  • Are able to provide same- or next-day service with more than 100 certified technicians
  • Offer a Five Diamond Certified central monitoring system with continuous live support
  • Have been protecting local Chicago communities for more than 50 years.

The Benefits of Reactivating Your System

At ADS, we’ve been performing reactivations and alarm system takeovers in Chicago for decades. The following are a few of the many advantages of reactivating a current system versus installing an entirely new one:

  • You may be able to keep your current equipment rather than buying new.
  • We can assess which parts of your current system are outdated to ensure you experience the highest level of safety.
  • Reactivation is completed more quickly than a full installation, saving you time and money.
  • Our certified technicians can perform the takeover for minimal upfront cost.
  • We’re currently waiving the $75 activation fee.

Reactivate Your System With ADS

Reactivate your alarm system with ADS and enjoy all the perks of working with Chicago’s family-owned security company. We’re known for offering unbeatable customer service with live support 24/7, around-the-clock monitoring, and same- or next-day installation and maintenance. Your peace of mind is our top priority.

Give us a call at 630.844.5300 to reactivate your alarm system and join the ADS community today.