The Sanwa DCM400 is a 400 Amp digital clamp meter with an accuracy of 1.9%.The DCM400 is a digital AC clamp meter is designed for the IEC measurement category CAT. III 300V, and it is suitable for measuring low-voltage circuits. Along with measuring AC currents, the DCM400 is capable of measuring AC and DC power up to 600 Volts. It can also measure resistance, frequency, and continuity with a buzzer alarm.The device has a 4000 count / 42 segment analog bar graph display. It features a hold option to pause a measurement on the display. The device also has an auto-power off feature that turns it off after 30 minutes of no operation.Meter includes one set of test leads, carrying case and instruction manual.