Moxa EtherDevice™ EDS-308/309 Series consists of 9- and 8-port smart Ethernet switches, providing an economical solution for your Ethernet connections. As an added bonus, the built-in smart alarm function helps system maintainers monitor the health of your Ethernet network. EDS-308/309 switches have a wide operating temperature range of -40 to 75°C, and are designed to withstand a high degree of vibration and shock. The rugged hardware design makes EDS-308/309 Series perfect for ensuring that your Ethernet equipment can withstand critical industrial applications, and complies with FCC and CE Standards.