iMBAPrice RJ11 Phone Splitter 4C Straight T-Adapter

Telephone splitter for dual devices

The iMBAPrice RJ11 Phone Splitter is a straight T-adapter that plugs into a standard two-line telephone jack. It lets you connect two modular phones or a phone plus an accessory at the same jack. The 4C wiring supports both line one and line two configurations. This simple adapter adds a second connection point without rewiring.

Check jack type and wiring before ordering

Verify that your wall jack is a standard two-line RJ11 port and not a single-line or proprietary system. Confirm the existing cable uses four conductors so both lines pass through the adapter. The splitter is passive and does not amplify signal, so line quality depends on the premises wiring. Ensure the connected devices are analogue telephones or compatible accessories.

Replaces a single-outlet jack for two-line access

This adapter upgrades a single RJ11 outlet so two devices can share the jack while keeping line one and line two separate or combined. The jump is worth it when you need a fax and a phone, or two handsets, at one location without installing new cabling. It does not add lines where only one exists, so buyers who need additional telephone numbers from the provider will not gain them.