CHV-2 Seismic Switch

Protect your passengers and elevators.  The CHV-2 Seismic Switch will reliably respond to earthquake motions and disable elevators which would otherwise be unsafe.

Passenger Safety is Job One

For 50 years Seismic Switch, Inc. has set the industry standard in elevator seismic ground motion detectors with the reliable Model CHV-1 Seismic Switch. Now available, the next generation Electronic Seismic Switch, the CHV-2, the most reliable motion detector available on the market. We are pleased to announce the CHV-2 has selectable levels.


How to Order

Simply email us for a custom quote. 
Ask us about discounts for bulk orders of 60 units or more.

Features & Specifications

  • UL & cUL approved
  • Fail-safe operation – any malfunction indicates trigger; no "dead detector" problems
  • Most economical Seismic Switch on the market
  • Includes built in battery backup and latching earthquake memory
  • Meets all applicable codes
  • Simple, quick and easy installation - no special wires or cables needed
  • Selectable levels
  • No calibration ever required
  • Most advanced – MEMS style triple axis accelerometer w/ digital interface. Made by one of the world’s top 5 semi-conductor companies
  • Sophisticated custom software
  • 120 VAC, 240 VAC, 50 or 60 HZ and 24 VDC inputs
  • 120 Volt output, .6 amp, AC or DC, 30 Volt DC output, 2 amp
  • Indicator lights for power, low battery, trigger and test
  • Minimum 100 hour battery life in power failure
  • Easy to replace and inexpensive long life lithium batteries
  • Multi-layer board is 4" x 6"
  • Box is 6" x 8" x 3"
  • Weight = 3 lbs

Contact Us!

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Seismic Switch

889 4th Street

San Rafael, CA 94901