FiberPlex Technologies fiber optic SFP module for use in the WDM16 and TD-6010 units. The SFP-MC24X-8585-0 is a Multimode,1 GB ethernet transceiver( send & receive in the same unit) utilizing LC type fiber connection measuring 850 nm (nanometers) with a Duplex fiber strand channel with a distance range of 500 meters (approximately 1640 feet).