Switch 12 can show brake work status, brake or loose ,swith is triggerred by the plate 13 that connect with level, when brake is in loose condition, micro-switch is in movement condition.

• 微动开关12可以显示制动器的工作状态，制动或松闸，微动开关由与杠杆相连接的挡板13来触发，当制动器松闸时，微动开关处于动作状态。