Cambridge, MA Residents:

Call Today & Install Today!

†Not available in all areas or instances. Call for details.
1New customers only. Early termination fee applies. Installation starts at $99 with 36/24 month monitoring agreement. Upgraded packages require additional install fee. See all offer details below. Offer is not able to be fulfilled for systems not installed by 2/7/21 and subject to refund. See all offer details below.
Choose your property type:
OFFER INCLUDES:
  • Digital Keypad for Police, Fire and Emergencies
  • Monitored Security Service
  • Control Panel with Battery Backup

Call to Upgrade to

Fast Alarm Response
With local offices throughout the country, ADT is never more than a phone call away.
Protection Guarantee
ADT pays your insurance deductible (up to $500) in the event of a burglary, while your alarm system is armed.^ (Certain Restrictions Apply)
Low Monthly Fees
ADT Monitoring can help protect your property with our low cost plans
Homeowner Savings!
Having ADT Monitored Security Service Could Help You Save on Your Homeowner’s Insurance
24-Hour Monitoring
ADT's monitoring centers provide protection with the latest technological equipment 24 hours a day, 365 days a year.
Money-Back Guarantee 3
If during the six months following installation ADT is unable to resolve any system-related issue, you may receive a refund of the installation price and all monitoring fees you paid within the first six months. Certain restrictions apply.