Our 4 pin RJ11 extension cable is used in the UK for extending the cable that connects from the phone line to the modem or router by up to 10m. In the USA the cable is most commonly used to extend a telephone cable. 4P4C flat cable approx 5mm in width and less than 2mm in height. Made from full copper.
10 meters in length 6P4C RJ11 Male to female extension Extends from the BT filter to Modem/Router USA Telephone Extension
Did you no some RJ11 cables only use 2 pins a 4 wire extension like this will just use the pins connected though so will work fine providing its a straight wired cable.
