Cancel Service

To stop your service we must receive 30-day cancellation notice by mail, fax, or email. The easiest way to cancel is to submit your cancellation here:

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  • 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!

    • One of our dedicated support team will contact you to customize a solution just for you.
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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
    As Seen On
    As Heard On

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