ACO #3058
Calif. State Lic.# 555389

Logo, Mountain Alarm - Residential Security Systems

21115 Longeway Road,
Suite B
Sonora, CA 95370
About Us

Recognizing the need for an experienced, reliable, and affordable local alarm service, Tom Molinari Sr. founded Mountain Alarm in Sonora, California, in April of 1989. The Molinari family has been dedicated to providing reasonably priced, innovative security solutions and unparalleled service to private residences, businesses of all types, schools, and government agencies throughout the Mother Lode region.

Over the years, Mountain Alarm has earned its place as the number one choice for home and business security systems in the Mother Lode and the surrounding communities. In May 2002, the company incorporated and became Mountain Alarm Inc. In April 2014, we completed our twenty-fifth year of providing reasonably priced, friendly, efficient, and personalized service to our growing list of satisfied customers.

Company Trucks - Residential Security Systems

A Family Run Business

Before establishing Mountain Alarm, Tom Sr. had owned Peninsula Alarm, Inc. in the San Francisco Bay area. Tom Sr. has nearly 40 years of experience in all phases of the security industry, including sales, service and repair, system design, installation, and management.

In June of 1995, Tom Molinari Jr. joined Mountain Alarm, and has worked his way up from wire puller to installer. Now with 20 years under his belt, Tom Jr. is currently the Service Manager.

Our Commitment to Excellence

As the company moves into its third decade, it remains our goal to work even harder to ensure our customers' satisfaction and safety. With nearly 95 years of combined experience, our management and technical staff is ready to serve you 24 hours a day, 365 days a year, whenever you need us. We hope you have enjoyed your visit to and we would be delighted to answer any questions you may have.

If you’re looking for a local alarm company with a commitment to provide the best security and service, you’ve come to the right place. We hope to be able to provide you with a no charge security review and estimate.

Contact our staff in Sonora, California, for Security Systems that meet your safety and budget needs.