CC-U/STDR universal analog signal converter, Input Signal Ranges: 7 configurable ranges, including: 0–20 mA, 4–20 mA, 0–1 V, 1–5 V, 0–10 V, +-10 V, Output: 2 x SPDT (Single Pole Double Throw) relay contacts, Control Supply Voltage (Us): 24–48 V DC / 24 V AC, Electrical Isolation: 3-way galvanic isolation