The DS300ID from Danisense is a Current Transducer with AC Input Current 300 A, Output Current -0.45 to 0.45 A, Supply Voltage 14.25 to 15.75 V, Frequency 0.01 to 5kHz, Temperature Operating Range -40 to 85 Degree C. Tags: Screw Mount, AC Current Transducer, DC Current Transducer. More details for DS300ID can be seen below.