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White RJ11 duplex wall jack adapter, two pack

Vszerda

Vszerda RJ11 Duplex Wall Jack Adapter 1 to 2 White 2 Pack

SKU CH-Z3A4-B5NY8

A four-conductor duplex adapter that plugs into any modular jack and splits one port into two for phones, fax machines or modems

  • Converts one modular jack into two usable ports
  • Four-conductor duplex design supports standard phone wiring
  • Plugs directly into any existing modular wall jack
  • Accepts line cords from two separate devices simultaneously
  • Compatible with phones, fax machines, answering machines and caller ID

Dual RJ11 Splitter for Two Devices

This Vszerda duplex wall jack adapter converts a single modular telephone socket into two separate ports. The four-conductor design plugs straight into any standard RJ11 jack and accepts line cords from two devices at once. It suits home or office setups needing a phone, fax machine, answering machine or caller-ID unit on the same line. The white two-pack keeps spares handy for multiple rooms.

Passive Wiring with No Power Required

The adapter contains no electronics, so it draws no power and adds no noise to the line. Signal quality depends only on the existing wiring and the devices connected. Because it is a straight-through splitter, both ports share the same circuit; incoming calls ring every attached handset simultaneously. No configuration or external supply is needed for normal operation.

Fits Standard Wall Plates and Baseboards

Each unit measures the same width as a typical modular plug, so it sits flush against standard wall plates or surface-mount boxes without blocking adjacent outlets. The splitter frees the second device from daisy-chain wiring or a separate wall jack. It works with any RJ11 line cord, letting you position phones, modems or fax machines where the cable reaches.

How it compares

Measured against everything we stock in HDMI, VGA & USB Splitters, at today’s prices. Recalculated every night.

Price $19.99
Pricier than about 57% of the 247 comparable items (median $17.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the Vszerda RJ11 duplex wall jack adapter into my existing modular jack?

Plug the adapter directly into any standard modular wall jack until it clicks securely. The step people often miss is ensuring all four conductors align properly so both ports carry a live signal for two devices.

What maintenance or replacement will the Vszerda RJ11 duplex wall jack adapter need over time?

The adapter has no moving parts or consumables, so it requires no routine maintenance. Replace it only if the plastic housing cracks, the contacts corrode, or a port stops passing a dial tone after testing with a known-good line cord.

What is the first limit I will hit when running two devices simultaneously on the Vszerda RJ11 duplex wall jack adapter?

The single incoming line shares its bandwidth and ringing current between both ports, so simultaneous calls or high-draw devices like a fax and modem together will hit the line's electrical limit before the adapter itself does.

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