From commercial to residential applications, Yarnell Security provides the highest quality security, safety and automation backed by the best customer service. Our state-of-the art products and services include commercial and residential security systems, fire alarm systems, video, managed access, and test and inspections. Yarnell Security is UL listed and offers the highest rated 24/7 monitoring of burglar and fire alarms in the industry. Protecting our customers with unparalleled expertise and service, our company stands by the values that have made Yarnell Security the industry’s best: Integrity, Initiative, and Intelligence.