ODC= Out Door Connector, it's stable and water& dust proof. It's widely used in fiber optic transmission in harsh environments like FTTA(Fiber To The Antenna), mine, sensor, electric. It's designed with stainless steel housing,rubber cushions inside, spiral bayonet and single-key& pin guide connection, and high intensity of tension. The grade is IP 67. For ODC, there're two types- plug and socket, and they are connected directly without adapter.Normally there're 2 and 4cores, 6 and 8cores can be customized. Currently there're these brands of ODC, Huber& Suhner, Amphenol, Rosenberger, TE and so on, and ODC of these brands are compatible. We, Ningbo Weidan Electronics Co.ltd., also develop our own ODC connectors independently, they are: ODC A, ODC B, ODC C. A and B are compatible with most ODC connectors of other brands, and ours are more competitive on prices and quality. C owns its unique design, it's not compatible with others, while it's available for multi cores and provides customers more options.