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Home and Business Security Solutions. From alarms and cameras, to access control and intercom systems, to home health safety and personal/ family mobile safety.

At ADT, we understand that the most important service we can offer to you is to protect the security and tranquility of your family and home. To us, this means more than just installing a home security system in your Earth City, MO home. We have been the leading home security company for over 140 years. At ADT, we are also leaders among home security companies in Earth City, MO developing home automation systems that work in conjunction with our home security alarms. You can be assured that your home is monitored and secure, 24 hours a day/365 days a year, no matter how far you may be from Earth City, MO. We ensure your home is monitored and secured for a variety of disasters.

3401 Rider Trail S

Earth City, Missouri 63045

Phone: 314-960-8627