行程开关，YBLX-3/11K 上海临嘉科教仪器有限公司

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-40805395.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-61951739.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-71836520.jpg