The core business of Sentinel is to provide advanced security solutions by designing, selling, installing, servicing, maintaining and monitoring Electronic Intrusion Detection, Fire Alarm, Closed Circuit Television, Access Control, and Business Telephone/Intercom Systems.

To accomplish this objective, Sentinel represents technology from over 200 of the industry's leading manufacturers. Sentinel also has their own engineering department with a comprehensive CAD system, which allows them to customize systems to customer specifications.

Sentinel focuses on servicing and maintaining the systems they install with a fully staffed service department, with technicians on call 24 hours a day for customer support. Customized service maintenance and inspection packages are also available to fit each customer's needs.