
Fire Systems
Security Systems
Security and Fire Alarms and Monitoring Services
Looking Out For Waco, Texas Homes and BusinessesGet what you need to keep your property safe.
Therrell Alarm Protection Service sells, installs, services, and monitors fire alarm systems and security systems for homes and commercial properties.
- Burglar Alarms
- Camera Recorders
- Camera Systems
- CCTV
- Computer Cabling
- Security Alarm Systems
Headquarters in Waco, Texas. Serving Temple, Killeen, Bryan, College Station Texas, and communities throughout Central Texas.

Free Estimate
We offer a review of your property and recommend specific equipment and monitoring packages based on your needs.
Military Discount
We offer discounts on system installations and service to active duty and veteran military service members from all branches.
1 Year Warranty
We warranty all our security and fire alarm equipment for 1 year, and we perform warranty work on many manufacturers.
24-Hour Response
We answer our phones 24/7/365. Call us anytime for questions on your business or home fire alarm systems.
Trained. Recognized. Certified. Professionals.
Come see what makes us different at Therrell Alarm Protection Service.
We are certified by the Texas Department of Public Safety
All our installation and service technicians are nationally trained and certified by NICET.
Our facilities are rated by UL, the leading international organization that certifies security monitoring facilities.
Residential and Commercial Security Systems in Waco, TX
We Install, Maintain, Replace, Upgrade, Service
Protecting homes and businesses.
Get a residential or commercial security system custom designed for your property.
- Intrusion alarms
- Electronic door & window lock sensors
- Glass break alarms
- Carbon monoxide sensors
- Interior and exterior smart light controls
- Thermostat controls
- Wired or wireless camera systems
- Closed circuit TV (CCTV)


Cutting Edge Innovation
Wireless. Cell Signal Monitoring. Touch Screen Control Panels. Encryption & Data Backup.
Today’s commercial and home security systems offer advanced technology and engineering.
Enjoy remote system access, automated reporting, signal boosters, and uninterrupted service. Touch screen or keyed panels that sync with all your property’s devices and an exclusive, secure mobile app.

Home and Business Security Monitoring in Waco, Texas
Uninterrupted security monitoring services. For residences and commercial properties. UL-rated central monitoring station. The only locally-owned and operated alarm system monitoring. Based in Waco, Texas, serving all of Texas.
Highly Secure Properties
From banks and jewelry stores to data centers and medical facilities, we customize solutions for all security levels.
Emergency Response
Professional alarm monitoring and immediate dispatch of emergency response teams saves more lives and reduces property damage every year.
Therrell Alarm Protection Service monitored alarm systems reduce emergency response time by two minutes on average.
Commercial Security Cameras & CCTV
Loss Prevention. Incident Documentation. Crime Reduction.
There are many reasons to have security cameras on your property. Get the best cameras for indoors, outdoors, and anywhere from Therrell Alarm Protection Service.
Top security camera system designs, including dome, pan-tilt-zoom (PTZ) cameras, panoramic cameras, bullet cameras, and more. Low lighting, motion-sensor, and HD cameras. Equipment for mounting and concealing covert cameras.
Trained professionals always watching out for your property: Therrell Alarm Protection Service.

CCTV and On-Site Monitoring
We set up your monitoring station anywhere, including installation of secure, encrypted computer software.
Top Alarm Panels & Remote Access
Touch screen and smart security system panels allow remote access from a tablet or smart phone app.
Call Answering Service
For Medical, Dental, Real Estate, & Other Professional Offices
Our trained operators specialize in the best answering service practices.
With sensitivity to the way your industry works, we offer your customers and business partners outstanding service.
More than message taking
Therrell Alarm Protection Service operators direct phone traffic, answer frequently asked questions, schedule appointments, take records transfer requests, and more.
Customized, Integrated System
Tailored 24-hour call answering services, designed to be a support extension for your team.
Recorded Calls & Automated Reports
Ensure that all operators are representing your business appropriately.
Use recordings for trainings. Receive data on call traffic, length, and results.
Professional Call Management
During business hours, or after hours, professional call answering services for all businesses. We use a state of the art system and the best trained operators to manage incoming calls for many industries.


Viking Elevator Phone Answering Services
Uninterrupted. Life-Saving. Emergency Trained.
Therrell Alarm Protection Service elevator phone emergency operator technicians are standing by at our UL-rated Waco, Texas facility.
Elevator phone system monitoring you can trust. Instant call answering. Trained and certified professionals.
Residential and Commercial Fire Alarm Systems
Fire Alarm Installation, Service, & Monitoring
Fire alarms are one of the most popular and important security you can invest in for any property. For over 60 years, Therrell Alarm Protection Service has been known as one of the top fire alarm companies for homes and businesses in Central Texas.

Fast, Specific Responses Coded signals alert emergency personnel to your situation and dispatchers help direct response efforts more efficiently. Insurance & Government Inspections We perform inspections and certify fire alarm systems for insurance and government requirements.
Before an emergency. During the life of your fire alarm or security system. After an alarm goes off.
Therrell Alarm Protection Service in Waco, Texas is there for you every step of the way.