, a household earthquake alarm, is used to measure the earthquake azimuth and it can inform government and people of earthquake as soon as possible. So people can get timely help.
The physical photo of ATEQA2015
1. Alarm mode
Geomagnetism loss alarm, magnetic north and south reverse and longitudinal P wave variation alarm
2. When will it alarm
When over 3 magnitude earthquake, earthmagnetic field will change, for example, magnet will loss, North and South Pole will change or P wave impact will occur, etc. The alarm can sense the above changes and then alarms. If there are no such changes, it will not alarm.
3. How far ahead of time will it alarm
Generally, it can alarm 10 minutes to dozens of seconds in advance.
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