2011-4-4：奥的斯公司在日本的电梯产品因安装防震器，使得其电梯在地震期间没有发生人员被困事件。防震器的作用是使电梯在发生地震时平稳抵达一层，方便乘客及时撤离。

SEISMIC DETECTORS IN JAPAN

Monday, Apr 04, 2011
　　Otis avoided having trapped elevator passengers during Japan’s March earthquakes due to its seismic detectors. The elevators are engineered to go to the ground floor, allowing passengers to exit at the first vibration of an earthquake.