The Hirschmann RSPM20 is a robust media module designed for network solutions, falling under the category of switch modules. This unit features Port A with 4 RJ45 connectors supporting 100 Mbit/s over twisted pair cabling and Port B equipped with 4 SFP slots also at 100 Mbit/s, ensuring versatile connectivity options. Engineered to operate reliably within a temperature range of 0 deg C to +60 deg C, the RSPM20 meets stringent industry standards including CE, FCC, and EU Safety for substation environments. Ideal for engineers seeking high-performance networking hardware from a trusted brand in the series of RSPM20 modules.