BLACK BOX 

BLACK BOX LMC270A-MM-ST FST ETH IND MED CONV COP TO 100MBPS MM FBR HRD 1300NM 2KM ST

Mfg Part Number:  LMC270A-MM-ST  
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Price: $221.73
Quantity:
In Stock/Mfg Direct Ship
Last Updated: Aug 24, 2026
No Sales Tax except these states
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Keep critical networks connected in demanding industrial environments where standard networking equipment cannot withstand extreme conditions. These hardened Fast Ethernet media converters extend 10/100 Mbps copper Ethernet over fiber, helping organizations increase network reliability, overcome distance limitations, and maintain connectivity in manufacturing facilities, utilities, transportation systems, security networks, energy sites, and outdoor installations.

Designed for harsh environments, these industrial-grade converters enable copper-to-fiber migration while delivering the durability needed for challenging operating conditions. Multimode models provide cost-effective fiber connectivity for distances up to 2 km, making them ideal for factory floors, warehouses, and large facilities. Single-mode models extend network traffic up to 20 km, enabling dependable communication between remote buildings, substations, industrial control systems, and distributed infrastructure.

Fiber connectivity improves network stability by reducing exposure to electromagnetic interference, electrical noise, and grounding issues commonly found in industrial settings. Available with either SC or ST fiber interfaces, these converters provide flexible deployment options to match existing fiber infrastructure while supporting long-term network expansion.

Whether extending surveillance systems, industrial automation networks, remote monitoring equipment, or facility-wide Ethernet connectivity, these rugged media converters help deliver greater uptime, improved reliability, and expanded network reach where dependable communications are essential.

Main Specification
General Information
Manufacturer Black Box Corporation
Manufacturer Part Number LMC270A-MM-ST
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Model LMC270A-MM-ST
Product Name LMC270A-MM-ST Transceiver/Media Converter
Product Type Transceiver/Media Converter
Interfaces/Ports
Total Number of Ports 2
Network (RJ-45) Yes
DVI No
USB No
Parallel Port No
Digital Audio No
Digital Audio/Video No
Management Port No
Number of Network (RJ-45) Ports 1
Number of ST Ports 1
ST Port Type Duplex
Media & Performance
Media Type Supported Optical Fiber
Media Type Supported Twisted Pair
Fiber Mode Supported Multi-mode
Maximum Distance Supported 20 km
Network & Communication
Ethernet Technology Ethernet
Ethernet Technology Gigabit Ethernet
Ethernet Technology Fast Ethernet
Network Technology 10/100Base-TX
Network Technology 1000Base-FX
Physical Characteristics
Form Factor Rail-mountable
Height 4.3"
Width 1"
Depth 2.8"
Weight (Approximate) 8 oz
Miscellaneous
Package Contents
  • LMC270A-MM-ST Transceiver/Media Converter
  • Mounting Kit
Certifications & Standards
  • CE
  • TAA Compliant
  • IEEE 802.3x
Environmentally Friendly Yes
Country of Origin Taiwan
TAA Compliant Yes
Warranty
Limited Warranty 1 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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