EC-UCM controller is mainly comprised of four safety relays J1, J2, J3 and TJ and carries five connection terminals P1~ P5. It adopts vertical plug structure and the spacing is 5.08mm. The detection device is three door area switches (plug board is 200mm in length). This product is used for advance door-open, leveling at creeping speed and UCMP detection. It supports the wiring mode of door area switches with valid high/low level input and can satisfy UCMP detection plan of synchronous/asynchronous motor at the same time.