Upgrade your landline setup with this 2 Pack RJ11 6P4C Phone Line Splitter, designed to convert a single phone jack into two reliable connections. Whether for home, office, or business use, these adapters let you connect landline phones, fax machines, caller ID units, answering machines, or modems—all from one jack. Built with premium oxygen-free copper conductors and PVC insulation, these splitters minimize interference and signal loss, ensuring stable, clear call quality. With a simple plug-and-play design, installation takes only seconds—just insert the male connector into your wall socket and enjoy two functional ports instantly. Each pack includes two phone line splitters, making it easy to set up multiple devices or keep one as a backup. Compact, durable, and reliable, these adapters are the perfect solution for extending your landline communication system.