Two Way Telephone Splitter: 2 way RJ11 6P4C splitter lets you plug in two phone devices to one wall jack. RJ11 Male to dual Female 6P4C Splitter: two telephones or modems with US plug to connect to a single US telephone socket. Easy to use: RJ11 Telephone Splitter is easy to use, you just plug the RJ11 male plug into the RJ11 phone socket, and plug your RJ11 cables into the splitter Suitable for standard telephone cable, Package Include: 3 x Telephone Adapter Socket;