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Helpful Videos

Checking System Power

Main Back Up Battery

Glassbreak Detector Battery

Motion Detector Battery

Door/Window Sensor Battery

Customer Support FAQ

Monday – Friday 8am – 5pm

Monday – Friday 8am – 6pm
Saturday 9am – 3pm

24 hrs per day, 7 days per week! 

Monday – Friday 8am – 6pm
Saturday 9am – 3pm

Our state license number is:
B-02469

Family Owned & Operated since 1978 in Texas

We own and operate our own UL listed dispatch center right here in Texas, and that’s how we’re able to offer high quality monitoring at a great price. We are the largest independent alarm company in Texas.

No Contracts. No Price Increases.

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What our customers say

100% Satisfied

From the first phone call to the actual use of our security system we have been 100% satisfied! The technician was knowledgeable and courteous. He was able to answer all my questions and get the system up and running in no time. Thank you Smith Thompson Home Security for making our home more secure and at an affordable price to do so!!!!

Happy Customer Dallas, TX

We had a great experience with Smith Thompson

Recently for our home in downtown Houston! I was referred to Smith Thompson by a friend after expressing frustration with some of the larger brands that lock you into a 3-year contract. We called to inquire about the most cost-effective…

Excited Customer Houston, Texas

Official Home Security Company of the Dallas Mavericks