#1 Smart Home Alarm Systems Provider^

Home Security and Automation technology that’s always at your service.

"Doorman Service"

Watch Now

"Worry-Free Getaway Service"

Watch Now

"Move-In Service"

Watch Now

"Turn-Down Service"

Watch Now

^Strategy Analytics. US Interactive Security. April 2018

ADT Security Alarm Systems

Ranch style, split-level, apartment or two-story - every home has its own unique security needs. We get that. And for over 140 years, we've custom-designed home alarm systems to protect them.

Home security and home alarm systems

Securing Your Home

From door, window, and motion sensors to video doorbells and cameras, we'll build the perfect home alarm system for you

home security cameras

Always On The Lookout

Keep an eye on things even when you're away from home, with indoor/outdoor cameras and video doorbells

Smart home alarm systems with smart locks

Bring Your Home Security With You

With smart home alarm systems, control your locks, lights, garage door and thermostat from our app

fire alarm safety

Preparing For Emergencies

Adding smoke alarms, carbon monoxide detectors or flood sensors can help keep you and your family safer - whether you're there or away

We'll Cover You

Customized protection from 24/7 alarm systems monitoring to home automation. We've got it all.

Find The Level of Protection That's Right For You

ADT security alarm systems make it simple to help protect what matters most. 


  • Professional, reliable 24/7 security monitoring
  • Burglary detection
  • Fire, flood and carbon monoxide detection*
*Additional charges may apply


  • Remote arm & disarm
  • Smart home devices*
  • Customizable alerts, schedules and automations


  • Live streaming video from smartphone or computer
  • Record and save video clips

Celebrate Lives Saved

Every day our alarm Support Specialists respond to thousands of security alarms across the country. Here are a few of those stories where we're happy to have made a difference in.

The Hailey family lifesaver story
The Hailey Family
Amber and Fiona lifesaver story
Amber and Fiona
Julie's sting lifesaver story
Julie’s Sting

Home Security Tips For Even the Handiest DIYers

There's more to home security than setting your alarm system. Here's a few ways to make your home even more secure.