The CR4211S-20 from CR Magnetics is a Current Transducer with AC Input Current 0 to 20 A, Supply Voltage 0 to 10 V, Accuracy 0.005, Frequency 0.05 to 0.4 kHz, Temperature Operating Range 0 to 60 Degree C. Tags: DIN Rail Mount, Panel Mount, AC Current Transducer. More details for CR4211S-20 can be seen below.