Amazon.comThe RCA RC926 wireless phone jack converts your existing electrical outlet into a phone jack without the need for tools or wiring. Plus, it's fully expandable, allowing you to add as many additional RCA RC926 extension units as you need.The RC926 is very easy to install. Just insert the transmission unit into the AC wall outlet and connect the RJ-11 cable to the existing phone jack. Next, plug the included extension unit into the wall outlet. You can plug it into any outlet within your home. A green indicator light on the side of each unit indicates that it is functioning normally. A reset button lets you change the location of the phone jack or switch phones.The RC926 features built-in surge suppression and is ideal for placing a phone anywhere that an extension phone jack is not readily available. The RC926 is compatible with corded and cordless phones, answering machines, fax machines, and computer modems. It also supports call forwarding, call waiting, three-way calling, conference calling, and speed dialing.Once installed, the wireless phone jack system is fully expandable--you can add an unlimited number of extension units and phones throughout your home. --Megan DuganProduct DescriptionThe RCA RC926 wireless phone jack converts your existing electrical outlet into a phone jack without the need for tools or wiring. Plus, it's fully expandable, allowing you to add as many additional RCA RC926 extension units as you need.From the ManufacturerNo more playing the "sometime this week" game with the phone company. You can install another phone jack as easily as plugging in a toaster. RCA Wireless Phone Jacks turn any power outlet into a phone jack. Simply plug the base unit in next to the existing phone jack and place the extension anywhere you need another line. All our wireless phone jack systems have built in Surge Suppression and are expandable to as many extensions as you need.Technical Specifications Dimensions: 10.9" L x 10.6" W x 1.5" H Weight: 1.40 lbs