The USR-IS series are unmanaged industrial Ethernet switches launched by PUSR.The ISF series provides a 100Mbps rate while the ISG series provides a1000Mbps rate,with options for either 5 or 8ports. For hardware, the switches adopt dual power, fan-less,wide temperature and voltage design, and has passed rigorous industrial standard tests,which can suit for the industrial scene environment. It can be widely use dinsmartcity,railtransit,security surveillance,newenergy,and other industrial fields