行程开关，YBLX-JW2/11H 上海临嘉科教仪器有限公司

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-71836520.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-11514419.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-50333862.jpg