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Elevator earthquake sensor
An elevator earthquake sensor is a device that is used in conjunction with an elevator control system to enable an elevator to enter a regulated operation before or during an earthquake.
Before the earthquake, the elevator seismic switch detected the seismic wave in advance, and the output alarm contact control elevator control system enabled the elevator to open the door on the nearest floor, releasing the passengers in the elevator, and maximally saving the life safety of the passengers. Elevator equipment is not damaged.
There are many famous brands earthquake sensor stocked by Sanjin, Omron, Toyo V757N1-F etc.