Do you have an assortment of modular devices, but not enough places to connect them all? Introducing the Duplex jack Phone Wall Adapter by THE CIMPLE CO. Yes, whether you have a mix of telephones, answering machines, fax machines, modems or more - this dual jack phone splitter will give you the extra connections you need. Simply plug in the Duplex Jack in to the wall jack, and you've just converted a single wall jack into a two cord connection source. You now have one phone signal to two phones, facsimiles, etc. If you have 2 separate phone numbers in one wall jack... no problem, the Duplex Jack with designate a single number for your telecommunication needs, without compromising your secondary line. The best part about it all - you can use these all throughout your home or office, wherever there's a wall jack. It's as simple and plug and play. THE CIMPLE CO All of our high quality products are brought to you by the family owned and operated. We are located in Utah, "The Beehive State," here in America; where we have become a leading manufacturer and provider of high quality and durable electronic accessories along with OEM parts and replacements. Our products are backed by our amazing warranty and a satisfaction guarantee, including 100% US based customer assistance.