The ComNet Ethernet media converters are designed to transmit and receive 10/100 Mbps data over optical fiber through user selectable SFP options. The CNFE2MC transmits and receives a single channel of Ethernet data and the CNFE22MC transmits and receives two independent channels in one unit. Both are environmentally hardened to operate in extreme temperatures. Packaged in the exclusive ComNet ComFit housing, the CNFE2MC and CNFE22MC units may be either wall or rack-mounted, or may be DIN-rail mounted by the addition of ComNet model DINBKT1 adaptor plate. The small-size CNFE2MC/M is available for either AC or DC power.