The switch is designed to provide Ethernet services under harsh environmental conditions. Typical users are operators that need highly reliable data transmission in the telecommunication network like along oil and gas pipelines, at railways, and utilities. It offers 12 Ethernet ports and in addition 4 SFP cages for optical or electrical SFPs. All 16 interfaces can be configured for “Gigabit Ethernet” or “Fast Ethernet”. The highest reliability even in harsh climatical conditions is secured with its extended operating temperature range of -40°C to +85°C.  The uninterrupted operation even in the case of a power supply failure is realized with two redundant power inputs. Redundancy mechanisms, like Rapid Spanning Tree (RSTP), Multiple Spanning Tree (MSTP), and the industrial Media Redundancy Protocol (MRP) are supported so that the switchover and reconfiguration of the network can be realized within a few milliseconds in case of the failure of a transmission path.