... or 48V RS485 Fiber Modem, Dual Fiber Mini Rack Fiber Optical MultiplexerSPD-RS485-D-20-131SRS485 Fiber Modem ... , Single Mode, Dual Fiber, 20Km, 1310nm, SC/FC connector 220V or 48V, Mini ... FunctionBlank=Without HotlineH=With Hotline9Management FunctionBlank=Without SNMP10PackageS: Mini Desktop11Power Supply22=220V 11=110V 48=48V ShipmentInternational ...