The FUZRR ES2010+ Double Clamp Phase VA Meter is a high-precision digital phase meter designed for measuring AC voltage, current, frequency, and phase angle in electrical systems. It is widely used for transformer inspection, relay protection systems, energy measurement, electrical maintenance, and industrial electrical testing applications. The instrument can identify inductive and capacitive circuits, verify transformer wiring groups, and inspect secondary circuits. It features a rechargeable lithium battery with more than 12 hours of continuous operation, along with Hold, Backlight, and Auto Power Off functions.