Brand Name: Monster | Color: WHITE | For Modular Phones: Yes | Number in Package: 1 pk | Number of Conductors: 4 | Packaging Type: Carded | Sub Brand: Just Hook It Up We are a leading supplier of cutting edge home theater and low voltage electronic accessories. Our company is committed to creating and developing innovative electronic accessory products for the Consumer Electronic market. Effective and reliable high-speed audio and video components require high quality accessories. Our detailed quality production and inspection procedures insure that rigorous specifications are achieved. We strive to provide leading edge accessories while delivering impeccable service to our customers. | Converts a single modular telephone link hook up in-line to a dual adapter for a telephone and other phone device (fax machine, etc.) | One end is a single modular jack, other end has two modular jacks | Coupler modular | 2- way two modular phones and answering service or fax machine