Cat5e network Economiser Ethernet splitter coupler for RJ45 / required at each cable end.
These type of devices are otherwise known in the trade as Economiser and are used to transmit an additional signal down unused wires in commonly used CAT5e cable.
One is used at each end of the cabling.
RJ45 Plug to two RJ45 sockets.
Wired for Voice/Voice use.
Easy to use and saves time and money.
Dongle type as most commonly used.
Signal transmitted on un-used pairs.