The Hirschmann 942 132 004 is an unmanaged Industrial Ethernet switch from the SPIDER III series, specifically the SPIDER-SL-20-08T1M29999TY9HHHH model. It features 8 x 10/100/1000BASE-T(X) RJ45 ports and a 12/24 V DC power supply. The switch is designed for industrial environments with an operating temperature range of 0°C to +60°C and a protection class of IP30