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 connected.   
A state of the art design enhanced with an advanced mathematical algorithm will never allow unwanted switching-off at low rate accelerated oscillations which do not threat safety.

DS-101 Earthquake Unit has been certified and approved after having been tested by the Kandilli Rasathanesi (Kandilli Earthquake Observation Center), IGDAS( Istanbul Gas Distribution Utility) and the TSE (Turkish Standard Institute).