RCA White 2-Line Phone Splitter Jack is designed to conveniently split one phone cord into two, making it i for connecting two phone devices simultaneously. This telephone splitter jack works seamlessly with both 2-wire and 4-wire telephone systems, and it fits standard 4-wire telephone jacks. Its simple design ensures easy installation and reliable performance, for home or office use where multiple phone devices need to share a single phone line. Model Number: TP270WHR