The Yokogawa UD1BG3-045N-1KC-2SB-N is a Line-Powered (4-wire) Signal Conditioner and Isolator from Yokogawa's UTAdvanced series.
This unit is designed to accept a DC Voltage input signal with a user-configurable range (e.g., 0-5V, 0-10V, etc.). It provides electrical isolation between the input and output circuits to prevent ground loops and protect against electrical noise. It then performs a scaling conversion on this isolated signal.