The TriStar Commercial employees were not only on time, but ahead of schedule and kept me advised of their estimated time of arrival. Their communication skills were excellent & they explained everything to me clearly & concisely. They were professional, quick & efficient and very knowledgeable in their field. I researched alarms on line & their placement & responses to my questions lined up precisely. I?m very impressed with their work & will refer them to family, friends & acquaintances. Rebekah in Red Rock, TX
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