Locally owned, serving Central PA for over 15 years. We install, service and monitor security, fire and camera systems for residential, commercial and industrial applications.

Contact Details

  Website
  Person Keystone Alarm Services Inc.
  City Hanover, PA
  Zip Code 17331
  Address 1211 Hoff Road
  Phone Number (717) 632-9961

Promotions & Discounts

Active Military Service Discount

Reduced monitoring rates for customers during the length of deployment.


Senior Citizen Discount

Ages 65+ - receive a free emergency medical pendant with purchase of home security system.

From Our Website

Anyone can buy a simple camera kit off the internet, but when you want guaranteed professional quality video, a clean installation and local support when there's a problem, you need Keystone Alarm Services Inc. There are thousands of cameras and DVR's on the market today. We factor in such variables as lighting conditions, distances, electrical interference, weather, available bandwidth, power sources, recording needs, budget and more to get you the results you want. Call us today for a FREE consultation!


Don't be held hostage by the cable company or an alarm company who puts in equipment that can only be monitored and serviced by them, then raises your rates or charges you for an expensive service contract. When you choose Keystone you get more than good equipment. You get outstanding personal service, and a hotline support number answered by a live person 24 hours a day. Since we serve only the immediate area around York and Adams counties, we're always close by when you need us.