When the arm runs to the upper and lower two limit position, respectively press the lower limitswitch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
2
The main production LED tactile touch switch. Dust light touch switch. Limit detection switch. Waterproof audio headphone jack.