LEM DK Series Current Sensor, 400A, 4 → 20mA output current. Supply Voltage: 20 → 50 V dc, 22 → 38 V ac. Mounting Type: Panel Mount. Bore Size: 21.7mm. Accuracy: ±1 %. Minimum Operating Temperature: -20°C. Maximum Operating Temperature: +50°C. Depth: 30mm. Height: 57.2mm. Width: 89.7mm. MPN: DK 400 B420