The BECKHOFF CX2100-0004 is a 24VDC power supply unit with 45W max output, designed for CX2020 and CX2030 systems. It features automatic recognition for both E-Bus (EtherCAT terminals) and K-Bus (Bus terminals) connections, and includes a 2-line x 16-character FSTN display. Operating temperature range is -25 to +60°C with IP20 protection.