HELP PROTECT YOUR HOME
ADT Home Security in Frederick, MD
ADT is America’s most trusted* security company, tested and proven throughout our 150-year history Frederick homeowners know we can help them protect what matters most.

Compare ADT security packages
Compare ADT security packages
![]() |
![]() |
![]() |
|
---|---|---|---|
ADT+ Mobile App & Control
|
|
|
|
Intrusion Detection
|
|
|
|
Trusted Neighbor
|
|
|
|
Front Door Video
|
|
|
|
Perimeter Video
|
|
|
|
Motion Detection
|
|
|
|
Fire & Carbon Monoxide Detection
|
|
|
|
Water & Temperature Detection
|
|
|
|
Remote Access
|
|
|
|
Alarm Cellular Backup
|
|
|
|
30-day Event History
|
|
|
|
Theft Protection Guarantee¹
|
|
|
|
Money Back Guarantee¹
|
|
|
|
24-Hour Battery Backup
|
|
|
|
- 1 Requires ADT Complete pro monitoring plan and compatible devices. See here for terms.
- 2 Terms and conditions apply, see here for terms.
- 3 Applies after ADT has made attempts to resolve a system related issue. Requires purchase and continual monthly payment of both QSP and professional monitoring at time of activation to be eligible. See here for terms.
Convenience and protection in the palm of your hand
Convenience and protection in the palm of your hand
The ADT+ app lets you access your ADT system, Nest cams and Nest thermostats, all in one place.*
Screen images on this page are simulated





Happy Customers in the Frederick Area

Elizabeth
Frederick, MD
via ConsumerAffairs
Frederick, MD
via ConsumerAffairs
Nov. 18, 2017
"My son had ADT in his house and he recommended it. My mother who lives with me is 102 years old and she keeps letting her cat in and out at night so I am unable to set the alarm during that time but I do when I go out.
When my mother is going in and out, the system tells me that the door is opening or someone’s in the house. I appreciate that and it gives me a sense of security when I’m not at home. I have it for two and a half years now and it’s doing what I expect it to do. I’m very pleased and satisfied with the whole system. I would recommend it."

Margo
Hagerstown, MD
via ConsumerAffairs
Hagerstown, MD
via ConsumerAffairs
Aug. 12, 2017
"Gives me confidence that the premises is safe. The key chain fob is easy and convenient. Installer was polite and professional. I have used ADT for years but this new upgrade is wonderful and easy.
The voice directions are concise and fully understandable."

Mary Ellen
West Minster, MD
via ConsumerAffairs
West Minster, MD
via ConsumerAffairs
June 24, 2017
"Twice our friend and "cat-sitter" had inadvertently set off the emergency alarm and twice the police response was fast (arrived before she could figure out what she did wrong), professional, polite and reassuring.
ADT followed up with phone calls. She was using the key fob. Just a suggestion: could the key fob be designed to reduce the amount of false alarms; e.g.: if the "panic button" needed to be hit twice in rapid succession to engage? That bright red emergency button, easy to see, is also easy to mistake if one is in a hurry and has her hands full! Thank you for great service!"
ADT Frederick Service Area
Our ADT Frederick team offers professional home security installation and a variety of security and automation products and solutions.
Same-Day Installation
6-Month Money-Back Guarantee*
24/7 Live Phone Support
- ADT Security Services
- Frederick, MD 21074
- United States
- (301) 703-9472
- Frederick Office Hours
- M-F 8am - 4pm
- Sat/Sun Closed
- Questions? Call Us Today!
- M-F 7am - 9pm
- Saturday 8am - 6pm
- Sunday 9am - 6pm
- Braddock
- Buckeystown
- Walkersville
- Ijamsville
- Linganore-Bartonsville
- Middletown
- Jefferson
- New Market
- Adamstown
- Monrovia
- Lewistown
- Woodsboro
The ADT+ app gives you convenience and protection in the palm of your hand. You can access your ADT system, Nest cams and Nest thermostats, all in one place.*
More control, more choices, more peace. ADT has partnered with Google to give you more ways to help protected and stay connected to your home. Integrate Nest cams, Nest thermostats and Nest Hub for a more connected ADT system you can easily control, whether you’re at home or on the go.