The RJ11 4C 1-Male to 3-Female Adapter is a specialized telecommunications solution designed to expand a single telephone line into three separate access points. This modular splitter allows you to connect multiple devices—such as handsets, fax machines, and modems—simultaneously to one wall jack.
Constructed from durable, high-impact synthetic material, this adapter features a single male plug and three female sockets, making it an essential tool for organized home offices and multi-device communication setups.
1-to-3 Port Expansion: Efficiently converts one modular wall jack into three functional ports for maximum device connectivity.
4-Conductor (4C) Design: Fully supports standard 4-wire telephone systems, ensuring compatibility with most analog voice and data equipment.
Compact Modular Housing: Designed with a small footprint to sit flush against wall outlets or fit easily behind office furniture.
Reliable Signal Distribution: Features precision-molded internal contacts to maintain consistent signal quality across all three connected devices.
Plug-and-Play Installation: No tools or software required; simply plug the male end into your existing jack to instantly expand your network.
Connector Type: RJ11 1-Male to 3-Female.
Configuration: 4-Position, 4-Conductor (4P4C).
Material: High-quality, flame-retardant synthetic polymer.
Wiring Type: Parallel signal distribution.
Color: Classic Off-White.
Home Office Hubs: Sharing one telephone line between a standard desk phone, a dedicated fax machine, and an internet modem.
Retail Environments: Connecting a credit card terminal, a receipt printer, and a handset to a single point-of-service line.
Residential Infrastructure: Adding additional phone extensions to bedrooms or kitchens without installing new wall wiring.
Telecommunications Testing: Providing multiple access points for line diagnostic equipment during network maintenance.
Can all three devices be used at the same time? Yes. All connected devices will share the same active telephone line. Note that for voice calls, all handsets will be able to hear and participate in the same conversation.
Will this splitter affect my DSL internet speed? When used with high-quality cables, this passive adapter will not significantly impact your signal. For best results with DSL, it is recommended to use this splitter behind a high-quality DSL filter.
Does it work with 2-core (2C) or 4-core (4C) cables? While specifically designed as a 4C adapter, it is fully backward compatible with standard 2-core telephone cables.
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