10/100/1000 Mbps Ethernet Media Converters with 100FX and 1000FX Support + Optional Power over Ethernet (PoE)

CNMC[2,4]SFP[POE][/M] Series

Example of 10/100/1000 Mbps Ethernet Media Converters with 100FX and 1000FX Support + Optional Power over Ethernet (PoE)

Availability: Worldwide

PDF Datasheet: en  fr  




-40 º to +75 ºC




30W POE+




Made in the USA



The ComNet CNMCSFP electrical-to-optical Ethernet media converters accept a 10/100 or 1000 Mbps electrical input and converts this to a 100 or 1000 Mbps optical output (selected by a dip switch) and the 100/1000 Mbps optical input back to the 10/100/1000 Mbps electrical output. “Auto-Negotiating” is supported on the copper interface side. These devices use either one or two optical fibers, depending upon the selection of sold-separately SFP optical module. A PoE model, the CNMCSFPPOE/M meets the IEE802.3at standard and provides 30 watts of PoE+ power. The series consists of a small-size single channel model, CNMCSFP/M; a ComFit standard size, single-channel model, CNMCSFP; a dual channel model, CNMC2SFP; and a quad channel model, the CNMC4SFP.

Features for CNMC[2,4]SFP[POE][/M] Series

  • IEEE 802.3 compliant
  • Designed for installation in harsh out-of-plant/ unconditioned industrial or roadside operating environments (-40 º to +75 ºC ambient). Fully compliant with the environmental requirements of NEMA TS-2 for Traffic Signal Control Equipment
  • Status indicating LEDs provide rapid indication of critical operating parameters.
  • Supports Jumbo Frames
  • Voltage transient protection on all power and signal input/output lines provides protection from power surges and other voltage transient events.
  • ComFit standard form factor is interchangeable between stand-alone or rack mount use.
  • Uses customer-installed ComNet SFPs for compatibility with a wide range of optical fibers, optical connector types, and optical transmission distances (SFPs ordered separately).
  • Compact form-factor saves space in those installations where space may be at a premium.
  • Electric Port Supports Auto-negotiation for Full Duplex or Half Duplex Data Throughput
  • Standard ComFit models are hot-swappable.


  • Optical transmission of Ethernet-compatible industrial security access control systems, intercom systems, VOIP (Voice over IP) telephony networks, and IP-compatible CCTV camera surveillance networks
  • Optical Ethernet transmission to wireless LAN access points
  • Industrial Security, Transportation/ITS, and Industrial Control/ Factory Automation IP Networks
  • Optical transmission of any Ethernet-compatible equipment with a maximum data rate of 100 Mbps or 1000 Mbps

CNMC[2,4]SFP[POE][/M] Series Application Diagram(s) (1)

Application Diagram(s) for CNMC[2,4]SFP[POE][/M] Series

CNMC[2,4]SFP[POE][/M] Series Ordering Information

Part NumberDescription
CNMCSFP/MMini 10/100/1000 Mbps Ethernet Media Converter. Lifetime Warranty.
CNMCSFPPOE/MMini 10/100/1000Mbps Ethernet Media Converter with IEEE 802.3at 30W PoE+. Lifetime Warranty.
CNMCSFPComFit 10/100/1000Mbps Ethernet Media Converter. Lifetime Warranty.
CNMC2SFPComFit Dual 10/100/1000Mbps Ethernet Media Converter. Lifetime Warranty.
CNMC4SFPComFit Quad 10/100/1000Mbps Ethernet Media Converter. Lifetime Warranty.
CNMC2SFPPOEDual 10/100/1000Mbps Multi-Rate Media Converter, 100FX/1000FX Selectable, PoE+. Lifetime Warranty.

* Power Supply for PoE applications is sold separately. † Small Form-Factor Pluggable Module. Sold separately.