限位开关，D4C-3220 ANC477- 上海临嘉科教仪器有限公司

p1Src=//y1.yzimgs.com/uploads/391770/20250116-08370075.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20250116-08683175.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20250116-17572062.jpg