FQN18 series waterproof connector modifed based on FQ series products.these seres connector has the advantages of small volume,inner bayonet fast connection,environment resistant,waterproof,anti salt,anti mildew,simple operation.Spectra of FQ and Q series of products with the installation dimensions and contact type products.terminations are wire welding type,the products are widely used in various electronic instruments,electronic,electrical equipment,waterproof requirements of the electric connection.Products meet the standard of the Ministry of Railways TB/T2761.