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EL4500U - Nitek


The EL4500U system uses a four channel Transmitter and a single channel Receiver to extend Ethernet and PoE.

The EL4500U can be used on new or existing cable and is designed to greatly extend the distances to which IP network devices can operate. In addition to network communication the EL450U is ideal for PoE applications. It allows all power to flow from the head end for most camera applications. In unique cases where high power PoE is needed it can inject up to 25 watts of power at the Transmitter end.

Product Description

The EL4500U is another component of the Nitek cutting edge Etherstretch™ line.
This Environmentally Hardened Etherstretch™ link solution allows for the utilization of existing or the installation of new Category Communication (UTP) cabling. With the addition of an external power supply (PS48), this transmission set can supply PoE power to operate 4 IP network devices.
The link system transmits data from the 4 IP network devices over the four pair UTP cable for distances up to 600 meters (1968 feet).

The EL4500U is a 4 port Transmitter and Receiver link set which can work with any of the standard network switch requiring very little installation time and absolutely no set up or configuration. These units quickly turn ordinary UTP cable into a high speed network communication pathway. The EL4500U is transparent to the network requiring no IP and MAC addressing. Simply connect your network devices to the IP Ports of the Transmitter, connect the Transmitter to the Etherstretch™ branded UTP Receiver and the system begins communicating. LED indicators show the status of network communication and PoE power. The EL4500U requires no network settings to be changed or adjusted.

The Nitek Etherstretch™ EL4500U extends network communications to overcome cable distance limitations offering connections to devices in locations traditional networking does not allow. The EL4500U is ideal for retrofitting existing installations. The units are constructed of industrial grade RoHS compliant plated aluminium which is finished with a corrosion resistant finish making it very durable.


• Supports 4 network devices, including mega-pixel
• Fully transparent to the network
• Easy to install, no set up required
• No MAC or IP addressing required
• Surge protected inputs
• Ground loop isolation
• LED indicators for network signals, link status and power
• Optional power supply can insert PoE power for non-PoE switches
• Unit powered by PoE input or external power supply, passes PoE through
• Supports 10/100 over ordinary Category cable up to 600 meters (1968 feet)
• Environmentally hardened
• Made in the U.S.A.

Tech Specs

Size 1.0” x 4.0” x 4.3” including tabs (26 x 102 x 109mm)
Power Requirements 48 to 56Vdc, 1 to 5A Nitek PS48 Power Supply Included
Ethernet Connection [4] Auto Configuring 100BASE-TX Full Duplex
EtherStretch Link Connection [1] Auto Configuring 100BASE-TX Full Duplex
LED Indicators Link Status, Power, PoE Out, 10Mb or 100mb
Shipping Weight 2.0 lbs.
Mounting 0.20” Diameter (5.0mm)
Operating Temperature -40 to 75 degrees C/-40 to 167 degrees F
Environmental NEMA TS-2 (see spec sheet download)


EL4500U Specification Sheet Last Updated: August 30, 2017
EL4500U Installation Manual Last Updated: August 30, 2017