限位开关，D4C-1203 上海临嘉科教仪器有限公司

p1Src=//y1.yzimgs.com/uploads/391770/20250116-61951739.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20250116-34450840.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20250116-17572062.jpg