行程开关，WLCA12-2-N 上海临嘉科教仪器有限公司

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-50333862.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-50333862.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20250116-19074720.jpg