About us

Welcome to Seismic Switch, the leading provider of Seismic Switches for over 46 years. We provide earthquake safety equipment primarily for the elevator industry, but also for other industrial applications.

We are pleased to announce the CHV-2 now offers selectable levels. We've sold over 12,000 CHV-2 Seismic Switches since they were first introduced in 2008. Now you can help protect your passengers and elevators. Seismic Switch units can disable or deactivate any elevators which may become life endangering or self destructive during an earthquake. Based on our patented CHV-1 Seismic Switch, our proven units are designed to reliably respond to only earthquake motions and to reject interference or false triggering from man made and non-earthquake motions. We invite you learn more about our unique company and look forward to hearing from you to see how we can be of service!
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Our Story

Seismic Switch, Inc. is a 2nd generation family-owned and operated business.

Chief designer Larry Miller invented the industry standard and patented CHV-1 Seismic Switch and developed the CHV-2. We have been in business for 46 years and offer unparalleled products and customer service. We offer lifetime technical support and maintenance for all of our products. We pride ourselves on manufacturing our products in the United States.

Our Team

Leadership

Leah is the CEO and has been a managing partner of Seismic Switch for almost 2 decades. She studied poetry at UCLA and received her MBA from the University of San Francisco after a stint in the Peace Corps. She is active in the community as President of the Board for the Marinwood Community Services District and is the mother of two burgeoning leaders. Leah is a member of the San Rafael Chamber of Commerce, The Dixie Parcel Tax Committee and Marinwood CSD Emergency Succcession Planning Committee.

Office Support

Joanna Magee is the Office Manager at Seismic Switch, Inc. She is the first person you meet when you arrive at Seismic Switch, Inc’s vintage headquarters located in downtown San Rafael. She works closely with operations to provide daily support.

Joanna earned her Bachelor’s degree in communications from Trinity Western University in British Columbia. Prior to joining Seismic Switch, Inc., she gained extensive manufacturing and office management experience working at a research and precision instrument manufacture, as well as several non-profits.

New Location!

In the News

The Next Generation

Keeping passengers safe, big and small alike.

We're already grooming the 3rd generation of the family business. Meet our newest team members.

Leah's daughters getting a taste of the family business.

Our Commitment

We create the world's most reliable earthquake motion detectors to ensure the safety of your passengers.
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STRATEGIC PARTNERS

Schindler
Otis Elevator
Thyssen Krupp
Kone
Fujitec
Mitsubishi Elevator

Contact Us!

Seismic Switch

889 4th Street

San Rafael, CA 94901

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: (415) 492-1200