RS485 Mini Rack Fiber Modem Single Mode Dual Fiber 20Km 1310nm SC/FC connector 220V 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 RackHigh Quality with FCC certificateCondition: Brand NewManufacturer: SOPTOYour RS485 Fiber Modem carton should contain the ...