1. Product IntroductionUSR-ISG104-SFP is an industrial-grade Ethernet switch launched by You Man Networking Technology Co., LTD., equipped with 1 gigabit SFP optical port and 4 10/100/1000MBase-T adaptive electrical port, the product has the operating temperature of -40℃ ~ 85℃, with strong robustness to adapt to a variety of stringent environments. Rail installation features, wide temperature operation, to provide reliable and convenient solutions for the user's Ethernet equipment networking to meet the deployment requirements of rail transit, safe city, intelligent transportation, security monitoring and other harsh environments, to provide reliable and convenient solutions for the user's Ethernet equipment networking.2. product characteristics● The use of high-quality photoelectric integration module to provide good optical and electrical characteristics● Ensure reliable data transmission, long working life● Support full-duplex or half-duplex mode with automatic negotiation capability● Network port support automatic cross identification● Built-in store-and-forward mechanism, supporting a variety of protocols● In line with industrial operating standards, the average trouble-free work in more than 300,000 hours● Working power supply: DC 12-52V provide reverse connection protection● Use SFP fiber interface● Lightning surge protection (power supply) : 5000A(8/20μs)