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An HDMI extender transmits HDMI signals over distances that a standard HDMI cable cannot cover. A transmitter at the source sends video and audio via a network cable, fibre optic cable or the IP network to the receiver at the display. This allows the PC, media player or conferencing system to be kept centrally in the equipment room, while the picture is delivered to the meeting room, lecture hall or digital signage display.
Benefits at a glance: long distances without loss of image quality, use of existing network cabling, tidy installation and remote control of the source via IR or RS-232.
HDMI extenders over Cat6 connect transmitter and receiver point-to-point via a network cable. Models with HDBaseT also carry audio, IR and RS-232 control signals in addition to HDMI. The range depends on the resolution: typically up to 70m at 4K 60Hz and up to 100m at Full HD, with some models reaching further. With PoC (Power over Cable), only the transmitter needs a power supply.
Fibre optic HDMI extenders bridge up to 300m at 4K 60Hz using LC fibre optic cable and are immune to electromagnetic interference.
HDMI over IP extenders use a Gigabit network with a switch. This allows one source to be distributed to multiple receivers and the system to be expanded later – ideal for digital signage and larger installations.
An HDMI KVM extender additionally transmits USB for keyboard and mouse, so the remote computer can be operated directly from the workstation. Models with HDBaseT 3.0 also transmit USB-C and USB data.
The key factors are resolution, range and cable type.
Passive HDMI cables only carry 4K reliably over a few metres. With extenders, 70m to 150m over Cat6 depending on resolution, and 300m or more over fibre, are possible.
An extender lengthens the link, a splitter distributes one signal to several displays. Splitter extenders combine both.
HDMI extenders from Lindy: Lindy offers HDMI extenders over Cat6, Cat6A, fibre and IP, from compact extenders with loop-out to HDBaseT KVM extenders. System integrators and IT departments can get advice on projects and volume pricing from our technical sales team. For DisplayPort or USB-C sources, you will find suitable extenders here:
