Save on Your Security

Three Months Free Alarm Monitoring when you switch to Alarm Detection Systems

ADS wants to earn your business! We are offering 90 Days Free Monitoring for customers switching an existing security system account to Alarm Detection Systems from other providers. This offer is available to both home and business customers. Contact Us or use the convenient button below to get started with your savings.


Offer is contingent upon subscriber signing a minimum three years Security System and Services Agreement and subscriber’s payment of activation fee. Alarm Detection Systems (ADS) may revoke or modify this offer at any time. Additional terms and conditions apply. See Security Systems and Service Agreement for details.

We’re Determined to Exceed Your Expectations .

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. 

Four Great 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  • We can assess which parts of your current system are outdated to ensure you experience the highest level of safety.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.

Contact Us to reactivate your alarm system and join the ADS community today.


Protecting your home and the things that are precious to you is what we do.

Make the switch to alarm detection systems today.

Passion to Protect From Day One

ADS has been protecting lives and property for over five decades. We understand that people make the difference.

Need Assistance? We're here to help, call an ADS representative today!

Make the switch to alarm detection systems today. Switch/Activate

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We're the leading alarm system provider in the Denver area. Let's talk about making your home or business safer.

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We're the leading alarm system provider in the Midwest. Let's talk about making your home or business safer.

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