Fluke 400 A AC/DC Current Clamp expands the functionality of digital multimeters and measures up to 400 amps for both AC and DC currents. The large clamp claw gives you access to difficult to reach areas. Comes with a zippered vinyl carry case with moveable divider. Measurement Type: Hall sensor, Nominal Current Range: 400 A, AC/DC, Continuous Current Range: 1 to 400 A AC/DC, Maximum Non-Destructive Current: 400 A, Lowest Measurable Current: 0.5 A, Basic Accuracy: 3.5% + 0.5 A (% reading + floor spec), Useable Frequency: DC - 3 kHz, Output Level(s): 1 mV/A, Zero Error Adjustment: Yes, Safety: CAT III, 600 V, Maximum Voltage: 600 V, Battery Life: 9 V, 60 h, Maximum Conductor Diameter: 1.2" (30 mm), 0.08 x 0.98" (2 x 25 mm), Output Cable Length: 5.25' (1.6 m).