?Quality Safeguard?4KV lightning protection,Industrial grade protection design, -40 to 75°C working temperature and IP30 protection grade contributes to high quality.We committed to provide product- replace- without- repair service within 1 year, more concern on your using experience. ?Redundant Power?1 DC Power and 2 Industrial power(4 pin terminal),the 6 port switch feature Triple power option design to provide redundant power with overload current protection.(Note:The power adapter is not included). ?DIN-Rail ?With high strength cast iron housing, this 6-port Fast Ethernet Switch comes with an integrated DIN-rail mount and mounting hardware,easier to install. ?Link Extension Mode?The transmission distance of ports1-4 can be extended to 250m with a speed of 10M when it’s enabled for more using occasion. ?VLAN Mode?The Ethernet ports (1-4) of the Industrial switch cannot communicate with each other, and can only communicate with the UP-link port to reduce the network congestion effectively when the VLAN mode on. ?6 Port Industrial Switch?The Industrial Ethernet Switch has 4*10/100/1000M Ethernet ports+ 2 gigabit SFP slots, switching capacity up to 12Gbps,complied with IEEE 802.3, IEEE 802.3u, IEEE802.3z Standard with excellent performance.