Compact Ethernet Over Fiber Solution​

Industrial Media Converters - 10/100 Slimline Ethernet Media Converter
10/100 Slimline Ethernet Media Converter

The RLH 10/100 Ethernet DIN Fiber Link system is a rugged, full featured media converter. It converts copper Ethernet to fiber, and may be used to extend a copper Ethernet network up to 74 miles (120km) over fiber optic cable.

The RLH Slimline DIN 10/100M Ethernet Over Fiber system is a multi-function converter that supports Ethernet communications over fiber optic cable. Fiber optics not only provide the long distance Ethernet transmission capability up to 74.5 Miles (120km), but also provide immunity to EMI/RFI and transient surges. They are ideal for data communications near large electrical equipment or where radio interference can be an issue.

The slim DIN housing requires only 32mm of DIN rail space for mounting.

It requires a local 12~36VDC power supply that connects via a power terminal on the bottom. DIN rail power supplies are available to power the Slimline converter from AC or DC mains.


  • Compact, Slim, low cost Ethernet data over fiber solution
  • Available with ST, SC or FC connectors
  • Available in Single or Multimode fiber, up to 74.5mi /120km fiber range
  • Auto sensing for 10/100 Mbps speeds on copper Ethernet connections
  • IEEE 802.3, IEEE 802.3x, IEEE 802.3u compliant
  • IEEE802.3x compliant for full-duplex, back pressure flow control for half-duplex
  • Provides 801.1q pass-thru
  • Eliminates EMI, RFI, cross talk or ground loop issues
  • Convenient LED Status monitoring
  • Powering requires 12~36VDC 2A power supply
  • Built-in surge, static and circuit protection

Transmission Method:
Frequency modulated light via two optical fibers

Multimode: 1310nm
Singlemode: 1310nm/1550nm

Fiber Type Distance:
Multimode (62.5/125µm & 50/125µm): 1.2 miles/2km
Singlemode (9/125µm): up to 24.8mi /40km, 37mi / 60km, and 74.5mi / 120km

Fiber Connector Type:
ST, SC, or FC

H4.1” x W1.3” x D3.1” (103mm x 32mm x 78mm) not including DIN mount bracket

Power Requirements:
12~36VDC 1A via screw-down connector on bottom

General Information



Lead Time: 1 to 2 Weeks*

For product questions, volume pricing and/or delivery outside of the US and Canada, please contact sales.


10/100 Slimline Ethernet Media Converter

Product configurationModeConnectorDistanceFibersWavelengthPart numberPricehf:att:pa_modehf:att:pa_connectorhf:att:pa_distance
Multimode, SC, 2km/1.2 miles, Dual Fiber, 1310nmMultimodeSC2km/1.2 milesDual Fiber1310nmRLH-ES2-03-1$230.00
Multimode, ST, 2km/1.2 miles, Dual Fiber, 1310nmMultimodeST2km/1.2 milesDual Fiber1310nmRLH-ES2-04-1$230.00
Singlemode, ST, 20km/12.4 miles, Dual Fiber, 1310nmSinglemodeST20km/12.4 milesDual Fiber1310nmRLH-ES2-50-1$310.00
Singlemode, ST, 60km/37 miles, Dual Fiber, 1310nmSinglemodeST60km/37 milesDual Fiber1310nmRLH-ES2-51-1$410.00
Singlemode, ST, 120km/74 miles, Dual Fiber, 1550nmSinglemodeST120km/74 milesDual Fiber1550nmRLH-ES2-55-1$600.00
Singlemode, SC, 20km/12.4 miles, Dual Fiber, 1310nmSinglemodeSC20km/12.4 milesDual Fiber1310nmRLH-ES2-40-1$310.00
Singlemode, SC, 60km/37 miles, Dual Fiber, 1310nmSinglemodeSC60km/37 milesDual Fiber1310nmRLH-ES2-41-1$410.00
Singlemode, SC, 120km/74 miles, Dual Fiber, 1550nmSinglemodeSC120km/74 milesDual Fiber1550nmRLH-ES2-45-1$600.00
Singlemode, SC, 20km/12.4 miles, Single Fiber - Side A, T-1310/R-1550SinglemodeSC20km/12.4 milesSingle Fiber - Side AT-1310/R-1550RLH-ES2-10-1$350.00
Singlemode, SC, 20km/12.4 miles, Single Fiber - Side B, T-1550/R-1310SinglemodeSC20km/12.4 milesSingle Fiber - Side BR-1310/T-1550RLH-ES2-11-1$350.00
Singlemode, SC, 60km/37mi, Single Fiber - Side A, T-1310/R-1550SinglemodeSC60km/37 milesSingle Fiber - Side AT-1310/R-1550RLH-ES2-14-1$490.00
Singlemode, SC, 60km/37mi, Single Fiber - Side B, T-1550/R-1310SinglemodeSC60km/37 milesSingle Fiber - Side BR-1310/T-1550RLH-ES2-15-1$490.00
  • Bidirectional single fiber models require an A side and B side unit for a complete system

*Lead times are estimates and may vary. You will be contacted within 1 business day to go over the details of your order. If you require a specific date, let us know!
*Days = Business Days

WarningWarning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to

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