The Southwire tools and equipment 21510N 400 A AC clamp meter offers the features needed for routine electrical repairs. In addition to measuring AC current up to 400 A, the 21510N measures AC and DC voltage up to 600 V plus provides common multi-meter functions such as resistance, capacitance, continuity, temperature and diode. The 21510N offers a built-in, non-contact AC voltage detector and a powerful LED worklight for working in dimly lit areas. The 21510N also features a third hand test probe holder for added convenience. This CAT III clamp meter is designed to survive a 6 ft drop, making it built to last. Great for basic electrical work.