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Helpful Videos

checking system power

Checking System Power
main back up battery

Main Back Up Battery
glass-break detector battery

Glassbreak Detector Battery
motion detector battery

Motion Detector Battery
door/window sensor 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 Dallas Home Security Company Since 1978

We are the largest independent alarm company in Texas, family owned and operated since 1978. Two generations of family are on the job, and now offering multiple home services.

No Contracts. No Price Increases.

Get a Quote today!

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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
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We've had the same 16.95 rate for 45 years!