General Info

 Meet the Slinkman family! They are the proud owners and operators of Westminster Security Company and Alarm Company of Maryland. Pictured from left to right: Christina, Angel, Brad, and Nelson. 

Meet the Slinkman family! They are the proud owners and operators of Westminster Security Company and Alarm Company of Maryland. Pictured from left to right: Christina, Angel, Brad, and Nelson. 

Westminster Security Company and Alarm Company of Maryland are Maryland-based and family-owned electronic security providers. We have been serving our loyal customers, both residential and commercial, since 1970.

In addition, we also provide services to the surrounding areas of Pennsylvania, Virginia and Washington D.C. (Not Affiliated with Westminster Security-Toll Brothers Homes)  

We have been in business for over forty years. Our foundation was built with this mission in mind: 100% customer satisfaction. We attain this goal by providing the highest quality products and services at an affordable price backed with an excellent monitoring service and a friendly, knowledgeable staff of security experts.

We are large enough to serve your every security need, but small enough to know each customer by name. Currently, we have over 12,000 monitored customers.

We offer advantages you simply cannot get anywhere else. Below is a list of our wide range of products and services: 

Our Services

CONSULTATION / INSPECTION / INSTALLATION / MONITORING / Service   

  • New Construction- Residential & Commercial
  • Home Intrusion
  • Commercial Fire Alarm System
  • Commercial Burglar Alarm Systems
  • Access Control Systems
  • Commercial CCTV
  • Medical Alert Systems
  • Alarm.com Authorized Dealer
  • GE Security Pro Dealer
  • Authorized DMP Dealer
  • Authorized Bosch Dealer

Our Philosophy

We sell Security, NOT Contracts!!

We stand behind everything we do and strive to provide our customers with the highest quality service and the most advanced products in the industry. 

We are licensed and bonded to conduct business in the state of Maryland.  In addition, we are proud members of Maryland Burglar and Fire Alarm Association and the National Burglar and Fire Alarm Association.

Our Values

  • Trust & Honesty - We develop trust through honesty.
  • Customer Service - We provide unparalleled service & support to achieve total customer satisfaction.
  • Teamwork - Our commitment to teamwork is expressed through integrity, open communications and respect.
  • Quality - We always serve to meet or exceed the quality of service to our customers.
  • Innovation - We innovate to meet unique requirements with custom applications.
  • Industry Leader - We maintain industry leadership through continued assessment of new products in the security field.