IES1028-4GS-20F industrial Ethernet switches consists of 4 Ethernet ports, 20 Fiber ports and 4 Gigabit (SFP slot) ports that provide an economical solution for your industrial Ethernet connection. IES1028-4GS-20F switches have an operating temperature range of -40 to 75°C, and are designed with low consumption and without fan. The rugged hardware design makes the IES1028-4GS-20F perfect for ensuring that your Ethernet equipment can withstand the rigors of industrial applications.