Ethernet Switch, Port Type RJ45, SC Multimode, IP Rating IP20, Mounting Location DIN Rail, Network Interface 10/100 Mbit/s, Number of Ports 4, Resistance Properties Not Applicable, Switch Management Unmanaged, Maximum Input Voltage 24V DC, Maximum Operating Temperature 140 Degrees F, Minimum Operating Temperature 14 Degrees F, Overall Depth 3 3/8 in, Overall Height 3 7/8 in, Overall Width 1 3/4 in