| Monitoring | Updating Phone Numbers

Updating Phone Numbers

You can update your account information (phone numbers, travel notices, passwords), 24 hours a day, 7 days a week. Please call 972-526-8500 and press option #0 to speak with the Dispatch Center.

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.

Get a Quote today!

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