3 IN 1: Serial RS232/RS422/RS485 to fiber media converter, single Mode, dual fiber, SC, 20KM. 2pcs 5V1A USA power adapter, 1pc user manual Mini Size: 110mm*104mm*28mm black rugged case, support desktop and wall-mounted. RS485 RS422 RS232 Serial Over Fiber Optic Modem Converter Single Mode 20km Fc Sc Access Control Cctv Industrial Control I497304129 5W RS232 RS485 RS422 Fiber Optic Modem SC SM 1310nm 20m Various protection mechanisms to avoid the lightning strike, surge or chemical corrosion Product information Dimension: 110mm*104mm*28mm Weight: 0., 75kg/pair Outlook: Black and rugged case Packing: One pair fiber optic modem, two USA power adapters, and a user manual What You Get: One pair serial fiber converter, one for TX, one for RX. Description OM2101-RS232/RS422/RS485 is a multi-function and economic serial to fiber converter. Serial Distance: RS-232 port 15m, RS-422, RS-485: 1500 meters. The FBR-Serial-2 (MM / FC) is a multi-mode (MM), rugged, industrial-grade, multi-function RS232 / RS422 / RS485 to fiber optic converter that supports... Features: Hot-pluggable, 15KV ESD protection, Led Indicators PWR, TX and RX SC Connector Dual Fiber Rs232 Rs485 Rs422 To Fiber Converter 3 In 1 Rs-232/485/422 Serial Data Fiber Optic Serial Converter