Useful instrument for testing current, voltage, active power, electric energy and power factor. Easy to operate and maintain. Features: The testing accuracy is 1%, 2 digits. Display the AC voltage and power factor by 0.31 inches 4-digit red LED. Display the AC current and cumulative time by 0.31 inches 5-digit red LED. Display the active power , electric energy by 0.31 inches 5-digit green LED. The measurement resolution can change automatically. Only suitable for AC50Hz mains supply. Specifications: Accuracy: 1%,2 digits Voltage Range: AC 80-300V Current Range: AC 0-100A Cumulative Time: 0-999.59h Active Power Range: 0-30000W Power Factor Range: 1.000-0.000 Electric Energy Range: 0-99999kwh Item Size: 7.9 * 5.3 * 6.3cm / 3.1 * 2.1 * 2.5in Item Weight: 116g / 4.1oz Package Size: 8.5 * 6 * 7cm / 3.3 * 2.4 * 2.8in Package Weight: 143g / 5oz Package List: 1 * Meter 1 * User Manual(English)