Xindali Industries Co., Ltd.
since 1997，XINDALI focused on the push button switch.
In the elevator door system troubleshooting,the door bypass device can not only replace the artificial short circuit poeration,but also avoid the huge risk caused by human opreation error.The setting requirements,the priniciple and inspection method of door bypass device are introduced.
Some thoughts on the application and inspection of door bypass device are put forward.
Keywords：elevator;landing door;car door:bypass device;inspection