The IGS-20040MT is a Modbus TCP Industrial 20-port Full Gigabit Managed Ethernet Switch specially designed to build a full Gigabit backbone to transmit reliable and high speed data in heavy industrial demanding environments and forward data to remote network through fiber optic. It supports IEEE 1588v2 Transparency, ERPS Ring, L3 Routing, and DIDO. It provides 16-port 10/100/1000Base-T copper and 4 extra 100/1000Base-X SFP fiber optic interfaces delivered in an IP30 rugged strong case with redundant power system. Besides support for 40Gbps switch fabric to handle extremely large amounts of video, voice and important data in a secure topology, the IGS-20040MT provides user-friendly but advanced IPv6 / IPv4 management interfaces and abundant L2 / L4 switching functions. It is the best investment for industrial business expanding or upgrading its network infrastructure.With IP30 aluminum industrial case protection, the IGS-20040MT provides a high level of immunity against electromagnetic interference and heavy electrical surges which are usually found on plant floors or in curb side traffic control cabinets. It also possesses an integrated power supply source with wide range of voltages (9 to 48V DC or 24V AC) for worldwide high availability applications requiring dual or backup power inputs. Being able to operate under the temperature range from -40 to 75°C, the IGS-20040MT can be placed in almost any difficult environment.The IGS-20040MT supports redundant ring technology and features strong, rapid self-recovery capability to prevent interruptions and external intrusions. It incorporates advanced ITU-T G.8032 ERPS (Ethernet Ring Protection Switching) technology, Spanning Tree Protocol (802.1s MSTP), and redundant power input system into customer's industrial automation network to enhance system reliability and uptime in harsh factory environments. In certain simple Ring network, the recovery time of data link can be as fast as 20ms.