行程开关，YBLX-P1/303/1E 上海临嘉科教仪器有限公司

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-70736520.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-11514419.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-40805395.jpg