The ComNetTM CNFE2MC2C [/ M] Ethernet media converter is designed to transmit and receive 10/100 Mbps of data and bi-directional contact closure on multi-mode or single-mode fiber optics using SPF modules * that are sold apart to select distance and type Connector The electrical interface will automatically negotiate at 10 Mbps, or 100 Mbps of Ethernet rate without any modifications. The optical interface operates at 100 Mbps Ethernet rate These media converters are protected against environmental conditions so that they can operate in extreme temperatures. The small package CNFE2MC2C / M is ideal for locations where there is not much space left. Packaged in exclusive ComNet Comfit housing, the entire CNFE2MC2C size can be rack-mounted or can be mounted on a DIN rail by the addition of the ComNet DINBKT1 adapter plate model.