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Signamax- Signamax 065-79LXEWDMx1490- CWDM 1.25 Gbps Singlemode Single Fiber SFP Modules 20 km Span- Signamax SFP Interface Modules- Signamax Ethernet Switches- Signamax Optical Fiber NICs- Signamax Media Converters

WDM 1.25 Gbps Singlemode Single-Fiber SFP Modules - 20 km Span


The Signamax 065-79LX4WDMx1550 series models are Small Form-factor Pluggable (SFP) multimode fiber modules that support Gigabit Ethernet or SONET OC-12 over a single strand of singlemode fiber cable at distances up to 10 kilometers. There are two types of models in this series: one transmits at 1310 nm and receives at 1550 nm (model 065-79LXnWDMA1550), and the other transmits at 1550 nm and receives at 1310 nm (model 065-79LXnWDMB1550). These modules are designed to be used in pairs facing each other across a single stand of singlemode fiber. The "n" in the part number refers to the first digit of the typical distance spanned in kilometers (4 = 40 km). They are a cost-effective method of providing changeable Gigabit Ethernet or SONET OC-12 single-fiber singlemode interfaces to switches and media converters equipped with a standard SFP slot.



  • RoHS Compliant
  • Operation Temperature: 0~+70°C
  • Model 065-79LX4WDMA1550: 1310 nm uncooled DFB Laser Diode transmitter;1550 nm receiver
  • Model 065-79LX4WDMB1550: 1550 nm uncooled DFB Laser Diode transmitter;1310 nm receiver
  • Up to 60 Km link distance models are also available (indicative only**)
  • Hot pluggable
  • Metal enclosure, low EMI
  • Single 3.3V power supply
  • Low Power Dissipation


  • Metro Access Rings
  • Point-to-Point networking
  • 1x Fiber Channel
  • Gigabit Ethernet
  • Suitable for Fast Ethernet and OC-12 transmission 


Part Number



Link Power

Typical Max.



(Blue clasp)
Tx: 1310 nm
Rx: 1550 nm
DFP Laser 20 dBm 40 km 3.3V

0 ~ 70 °C

(Green clasp)

Tx: 1550 nm
Rx: 1310 nm

DFB Laser

20 dBm

40 km


0 ~ 70 °C

** Maximum distances attainable on singlemode fiber circuits are dependent upon a circuit's conditions; i.e., the number of splices
     and patch panels and the number of bends in the circuit path. For comparison with competing products, please use the Link
     Power Budget for meaningful comparisons.


Download Datasheet (PDF 599 Kb) Revised 10.20.2011


SFP Interface Modules

Signamax provides media conversion solutions that support data, voice, video and image transport over a wide variety of transmission media. These products convert a wide variety of data - from serial RS-232 through Standard, Fast, Gigabit Ethernet and SONET/SDH protocols. Conversions from twisted-pair copper cable, coaxial cable, multimode fiber and singlemode fiber, to other types of cable are all possible with the wide array of solutions from Signamax Connectivity Systems.






Network Connectivity

Media Converters Media Converters
Ethernet Switches Ethernet Switches
Industrial Ethernet Industrial Ethernet
SFP Interface Modules SFP Interface Modules
Optical Fiber NICs Optical Fiber NICs

Premise Connectivity

Work Area   Outlet Systems Work Area Outlet Systems
Patching Systems Patching Systems
Cross-Connect Systems Cross-Connect Systems
Patch   CordsPatch Cords
Optical Fiber Systems Optical Fiber Systems
Support Structures Support Structures


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New Bend Insensitive Fiber Jumpers

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