施耐德行程限位开关XCKM121塑胶XCKM123金属滚轮型号可选 ¥50.00 施耐德行程开关XCKN2118P20C限位开关光电开关传感器 ¥40.00 施耐德XCKM115塑胶滚轮XCKM110行程限位开关防爆光电开关 ¥40.00 施耐德行程开关XCKN2108P20C型号XCKN2121P20C限位开关接近开关 ¥70.00 施耐德行程开关XCKN2102P20C原装XCKN2106P20C限位开关传感器 ¥40.00 施耐德行程限位开关XCKN2145P20C型号XCKN2110P20C电容式接近开关 ¥50.00