iMBAPrice RJ11 Phone Splitter 4C T-Adapter Pack of 5

Telephone line splitter for dual devices

This iMBAPrice RJ11 T-adapter splits a single telephone jack into two modular connections. Each pack contains five adapters for adding a second phone or accessory at the same outlet. The straight 4C design connects to standard two-line jacks and supports line one, line two or a combined line one plus line two configuration.

Replaces single-outlet wall plates

Swapping a fixed single jack for this adapter lets two devices share one line without rewiring. The jump is worth it when a fax, modem or second handset must sit beside the primary phone and no spare wall port exists. It avoids the clutter and signal loss of chaining multiple inline couplers along a baseboard.

Tool-free installation with polarity awareness

Each adapter plugs directly into the existing RJ11 socket and accepts standard modular plugs on both female ports. No punch-down tools or wiring skills are required. The only common issue is reversed tip and ring wiring on one line, which causes dead tone or crosstalk; verifying dial tone on both ports before permanent placement prevents callbacks.