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GAS-SWITCH OFF EARTHQUAKE SENSING UNIT; DS-101
Gas Switch Off Earthquake Unit ( Earthquake Sensor) is
especially designed to protect human and building against gas
blast/leakage that may occur in time of earthquake strike.
Thanking to its in-built "Accelerometer Sensor" sensing
accelerated oscillations within specific frequency ranges,
it instantaneously switches off the gas from the central gas
unit by sending a signal to an exterior solenoid valve being
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