安全限位开关，D4B-2171N 上海临嘉科教仪器有限公司

p1Src=//y1.yzimgs.com/uploads/391770/20250116-50333862.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20250116-45561951.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20250116-63038617.jpg