Wi-Tek Multi-Gigabit SFP Fiber Module is designed to extend transfer distances up to 20km with different fiber connectors. Single mode SFP module and multi-mode SFP module, which allows users to select the appropriate transceiver according to the required optical range for the network. The most common optical transceiver is 1310nm wavelength for a maximum of 20km with single mode fiber optics. Copper-based SFP modules primarily are 1000BASE-T and 1000BASE-TX SFP modules used in gigabit Ethernet networking within 100 meters. According to the transmission speed, Wi-Tek SFP module can provide the 10Gbps or 1.25Gbps modules.