RJ11 Duplex Jack Adapter - Ivory
This Duplex Jack Adapter is designed for converting one modular jack into two. The four-conductor piece accepts line cords from any two devices such as phones, answering machines, fax machines, modems, caller IDs and more. This duplex adapter can be plugged into any modular jack.
Here’s an in-depth look at the specifications of this Duplex Jack Adapter