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QA-2000 Quake Alarm

$39.00
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Product Reviews

Product Description

The Quake Alarm™ alerts you to an earthquake before it starts shaking buying you time that can save lives.  It can provide a few seconds warning up to as much as 30 seconds depending on how far from the epicentre you are, enough time to move away from fall hazards and to a protected area like a doorway.   

Christchurch Field Test Reports

        

Event 10+

Date: June 6, 2011 through July 27, 2011

Time: Multiple

Location: Multiple

Magnitude: 2.0 - 5.5

Location of Quake Alarm: Kaiapoi, Christchurch

Report: Since being installed in Christchurch there have been many earthquakes/after shocks ranging from magnitude 2.0 to 5.5 so they are not listed here individually. In summary, the observer has reported that the Quake Alarm has detected all earthquakes/aftershocks above magnitude 3.5 (and some as low as 3.0 depending upon depth and distance from the Quake Alarm), giving a few seconds warning in each case and continuing to sound for the duration of the earthquake. The Quake Alarm has been found to be particularly useful at night to wake everybody up quickly saving time from the advance warning, the instant confirmation that a quake is occurring and the rapid awakening that the sound of the alarm provides. No false alarms have been detected.

See below for additional Field Test Reports

How does it work?

 The Quake Alarm is designed to provide early warning of seismic activity by detecting the "P" wave (compression wave) of an earthquake, which travels faster than and arrives prior to the more destructive "S" wave (shear wave) and surface waves.   

p-wave2.jpg

 

When an earthquake occurs, it releases energy in the form of seismic waves that radiate from the earthquake source in all directions. The different types of energy waves shake the ground in different ways and also travel through the earth at different velocities.

The fastest wave, and therefore the first to arrive at a given location, is called the P wave. The P wave, or compressional wave, alternately compresses and expands material in the same direction it is traveling. The S wave is slower than the P wave and arrives next, shaking the ground up and down and back and forth perpendicular to the direction it is traveling. Surface waves follow the P and S waves.  The Quake Alarm™ is sensitive enough to detect the P waves and sound the alarm before the destructive S waves hit.

Follow the links below for further information on the different seismic waves:

   http://www.geo.mtu.edu/UPSeis/waves.html

   http://pubs.usgs.gov/gip/earthq1/measure.html


 

 Features:   

  • Eliminates confusion, saves valuable seconds and provides peace of mind.
  • Is capable of detecting large earthquakes that occur hundreds of miles away and can detect moderate to minor earthquakes for many miles around your local area.
  • Monitors aftershocks.
  • Fully adjustable sensitivity setting.
  • Loud distinctive alarm.
  • Automatically resets and shuts off alarm when earthquake stops.
  • Mounts easily to wall. No screws, nails or tools required.
  • Operates using a standard 9-volt battery.
  • Patented reverse pendulum detection system.

 

Additional Field Test Reports

Over 7,000 Quake Alarms are deployed across California currently with many more in other geographies.  Below is a sample of some of the Field Test Activation Reports:

        

Event 9

Date: April 29, 2001

Time: 3:27 p.m. local

Location: Approximately twenty miles off the Pacific coast of Mexico

Magnitude: 5.4

Location of Quake Alarm: State of Colima Citizens' Protection Volcano Observatory, Colima, Mexico

Report: Approval was given to the Quake Alarm distributor in Mexico by the Office of Citizens' Protection to install six Quake Alarm units in various seismic stations located in the Pacific coast of Jalisco. Following is a report from that distributor:

In the Observatory of the Fire Volcano (Colima Volcano), located at an altitude of more than 4,000 meters above sea level, we had just installed the Quake Alarm thirty minutes before the earthquake happened.

In this observatory they have a radio receiver tuned to a special frequency that receives a signal from the Telemetry and Seismic Network of the University of Colima. This receiver generates a continual tone sound and a change in the pitch level indicates the occurrence of a seismic event. They use this system to monitor the Fire Volcano and the seismic events along the Pacific coast of Jalisco and Colima.

At 3:27 p.m., the radio receiver generated a pitch change indicating that the Telemetry Net of the University of Colima was getting an earthquake reading from the seismographs placed along the Pacific coasts of Colima. An officer from the observatory stated that the Quake Alarm triggered its alarm sound about one second after the radio receiver had picked up the earthquake signal. The officer called the other seismic stations; one located in Ciudad Guzman, Jalisco, some 20 km away from our location, reported that their Quake Alarms had activated too. In the Cihuatlan Base, located about 290 km from ours, they also confirmed that their Quake Alarm triggered its alarm sound. They also reported to us that they had received a lot of telephone calls from Quake Alarm users confirming their Quake Alarms had gone on. We received Quake Alarm activation confirmation from the Municipal Presidencies of Autlan de Navarro, La Huerta, and Villa Purification in Jalisco—all within Federal buildings.

All this was videotaped live inside the Citizens' Protection Observatory at the moment the quake occurred, a copy of which was shown to the Office of Citizens' Protection and made an evidence of its Performance and Accuracy.

After the seismic event detected by the Quake Alarms the Municipal President of Villa Purificacion made the decision to purchase eight Quake Alarm units to donate to Public Schools in the State.

The Hotel Nautico Melaque Jalisco has eight Quake Alarms installed and this earthquake triggered all of them, as reported to the Cihuatlan Citizens' Protection Base. We also have Quake Alarm activation confirmation from fifteen individual users in the area of Melaque Jalisco, and Barra de Navidad, Jalisco, and from the director of a Kindergarten in San Patricio, Jalisco.

Event 8

Date: January 13, 2001

Time: 11:33 a.m. local

Location: Sixty miles southwest of San Miguel, El Salvador

Magnitude: 7.6

Location of Quake Alarm: Mexico City, Mexico

Report: The individual reporting the Quake Alarm activation data stated that the Quake Alarm sounded an alarm a few seconds prior to people noticing the curtains moving or objects falling. The distance from the earthquake centre to the Quake Alarm was approximately 834 miles.

Event 7

Date: January 11, 2000

Time: 6:19 a.m. local

Location: Seven miles southeast of Cloverdale, California

Magnitude: 4.3

Location of Quake Alarm: San Francisco, California (first floor apartment)

Report: The observers were awakened by their Quake Alarm. The earthquake was not felt. The distance from the earthquake centre to the Quake Alarm was approximately 100 miles.

Event 6

Date: October 16, 1999

Time: 2:46 a.m. local

Location: Thirty-two miles north of Joshua Tree, California

Magnitude: 7.1

Location of Quake Alarm: Fontana, California

Report: The observers were awakened by the sound of the Quake Alarm. They both reported that it was a few seconds before they noticed any movement and that the movement was very slight. Within a few seconds the shaking increased and after about ten seconds an abrupt change in intensity occurred which felt about two to three times more powerful. The Quake Alarm continued to chime throughout the duration of the earthquake. The distance from the earthquake centre to the Quake Alarm was eighty-nine miles.

Event 5

Date: May 21, 1996

Time: 1:50 p.m. local

Location: Ten miles east of San Jose, California

Magnitude: 4.7

Location of Quake Alarm: Felton, California (five miles north of Santa Cruz)

Report: The observer reported that the Quake Alarm sounded its alarm several seconds before the earthquake was felt. The distance from the earthquake centre to the Quake Alarm was thirty-two miles.

Event 4

Date: March 19, 1996

Time: 11:37 p.m. local

Location: Northridge, California

Magnitude: 4.1 (aftershock to the Event 1 earthquake)

Location of Quake Alarm: Sunland, California and Fontana, California

Report: The observer in Sunland reported that the Quake Alarm chimed and that a moderate earthquake was felt. The observers in Fontana reported that the Quake Alarm awakened them, but no earthquake was felt. The distance from the earthquake centre to the Quake Alarm in Sunland was twenty miles. The distance from the earthquake centre to the Quake Alarm in Fontana was seventy miles.

Event 3

Date: January 7, 1996

Time: 6:32 p.m. local

Location: Ten miles northwest of Ridgecrest, California

Magnitude: 5.2

Location of Quake Alarm: Fontana, California

Report: The observer did not feel any ground movement. The Quake Alarm chimed for about twenty seconds. The distance from the earthquake centre to the Quake Alarm was 120 miles.

Event 2

Date: February 19, 1995

Time: 4:03 GMT

Location: Ten miles west of Crescent City, California

Magnitude: 6.6

Location of Quake Alarm: Felton, California (five miles north of Santa Cruz)

Report: The observers did not actually feel the earthquake, but the Quake Alarm did detect this event. The distance from the earthquake centre to the Quake Alarm was 350 miles.

Event 1

Date: January 17, 1994

Time: 4:30 a.m. local

Location: Northridge, California

Magnitude: 6.7

Location of Quake Alarm: Fontana, California

Report: The observer was awakened by the Quake Alarm and then the quake was felt. The quake continued for approximately ten seconds and then increased in strength for many more seconds. The distance from the earthquake centre to the Quake Alarm was seventy miles.

  

 


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