AC LED Power Monitor Multifunctional Digital Voltmeter Current Energy Meter SPM003AC380V Item Type: AC LED Power Monitor Accuracy: 1% ±2-digits Range: AC Current: AC 0-99.99A, minimum resolution is 0.01A Power Frequency: 45.0Hz-65.0Hz Power Factor: 0.00-1.00PF Active Power: 0-45000W, when the active power is between 0 and 99.9w,                    The display accuracy is 0.1W. Power: 0-99999kwh, when the power between 0 and 999 is 9kwh, the display accuracy is 0.01kwh. When it is between 10000.0-9999.9kwh, the display accuracy is 0.1kwh, when it is between 10000.0 and 99999kwh, the display accuracy is 1kwh. Speed: 2 times per second Size: Approx. 79 x 43 x 48mm / 3.1 x 1.7 x 1.9in Installation Size: Approx. 76 x 39mm / 3 x 1.5in Automatic Power Saving: Power off and save power. When the meter is turned on, the saved power will continue to accumulate.