In business over 60 years. The way we see it, customers could call any alarm and monitoring company. There are many capable fire and security alarm companies that have a knowledgeable staff. We have proudly served the communities throughout Central Texas since 1956. We aim to become part of all homes and businesses in the Waco, Temple, and Killeen communities.

All of Therrell Alarm’s technicians receive training from the National Institute of Certification in Engineering Technologies (NICET) to sell, install, and test residential and commercial fire and security systems.

We believe in serving those who serve America. That is why we offer a special discount to military service members because we love helping to protect the homes and business of the men and women who protect the US.

Our Services:

• Security Alarm Monitoring
• Fire Alarm Monitoring
• Answering Services
• Fire Alarms
• Commercial Security
• Home Security