Alarm Monitoring Services Directory

ADT Security Services

Largest alarm monitoring company in the U.S., with approximately 5 million customers.  The company provides security systems and alarm monitoring services to residents and small, medium and large businesses (expanded description).

Brink's Home Security

The company is the second largest alarm monitoring company in the U.S., with more than 800,000 residential and small business customers (expanded description).

Central Security Group

One of the fastest growing alarm monitoring companies in the U.S., serving Oklahoma, Texas, Kansas, Missouri, New Mexico, Arkansas, and Alabama (expanded description).

Honeywell Security

One of the 5 largest alarm monitoring company in the U.S., providing security services to businesses and residential customers.

Monitronics

Large, rapidly growing alarm monitoring company, with more than 400,000 customers.

Protection One

Large security services company with more than $250 million in sales.