ADT is the oldest security company in the US and is partnered with SafeStreets USA, the largest authorized provider of home security monitoring in Maryland. No other company provides monitored security to more homeowners in Maryland than ADT. Call today and ask how ADT monitoring can also help protect your Maryland home from other threats, such as Flooding, Fire and smoke damage, carbon monoxide poisoning, and not to mention home invasions and break-ins. ADT monitoring professionals are available 24 hours a day, 7 days a week to help protect your home & family. Whether you experience an accident or an unexpected crisis, just know that ADT and SafeStreets have your back. With more than 140 years of home security monitoring expertise, ADT monitoring is dedicated to protecting the things that matter most to you.