Featuring sophisticated technology, Earthquake Alert™ is a highly reliable earthquake detector that provides advance warning that an earthquake is on its way. While nothing or no one can accurately predict earthquakes, Earthquake Alert™ helps serve as an early warning system that lets you know that an earthquake has began before you feel the sudden shaking from the earthquake shock waves. The Earthquake Alert™ is based on the seismological principles of global earthquake monitoring systems which allow it to accurately detect the shock waves of an earthquake. This high technology earthquake detector contains an array of pendulums that naturally react to seismic vibrations and sends a signal through an electronic circuit to a chip. The chip analyzes the frequency and determines whether it's a sonic boom, a bomb, or an earthquake. This electronic chip allows the Earthquake Alert™ to filter out any unwanted false vibrations that may mimic the vibrations of normal seismic waves. It can provide you with an accurate early warning signal and eliminate false alarms. An earthquake is like lightning and thunder. First comes the primary waves (P wave) which run through the ground very quickly followed by the secondary waves (S waves) which are responsible for most of the damage that we associate with earthquakes. The Earthquake Alert™ can accurately detect the primary waves, (p waves) which occur tens of seconds before the secondary waves, (s waves), which are the destructive waves. A pre-warning of a half minute or more enables you to find cover for yourself and your family. Having this advance warning, can mean the difference between life and death in a potentially life threatening earthquake.