IES1024-4F Industrial Ethernet Switches Consists of 20 10/100m Ethernet Ports and 4 100m FIBER Ports That Proceeds An Economical Solution for Your Industrial Ethernet Connection. The IES1024-4F Switches have an operating temperature range of -40 to 75 ° C, and are designated with low consumption and whit fan. The RugGed Hardware Design Makes The IES1024-4F Perfect for Ensuring That Your Ethernet Equipment Can Withstand The Rigors of Industrial Applications.