限位开关，XCKN2143P20C DCP342- 上海临嘉科教仪器有限公司

p1Src=//y1.yzimgs.com/uploads/391770/20250116-11514419.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20250116-30705317.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20250116-99296942.jpg