6 in 1 Multifunction Digital Meter AC Current Voltage Power Frequency Monitor for Household SPM004 AC250-450V Item Type: 6 in 1 Digital Meter Model: SPM004 Material: ABS Measurement Accuracy: 1% ± 2 characters AC Current: AC0-100.0A, current display resolution is 0.01A, and 100.0A is displayed when the current exceeds 100A Power Frequency: 45Hz-65Hz Power Factor: 0.00-1.00PF Active Power: The measuring range is 0-30000W or 0-45000W, the display resolution between 0-9999.9W is 0.1W, and the rest is 1W Electric Energy: The measuring range is 0-99999kwh, 0-999.99kwh, the minimum display resolution is 0.01kwh 10000.0-9999.9kwh, the minimum display resolution is 0.1kwh, 10000.0-99999kwh, the minimum resolution is 1kwh Measuring Speed: About 2 times per second Opening Diameter: Approx. 22mm / 0.9in Saving and Memory Function: When the power is off, the instrument will automatically save the current electric energy value, and the meter will read the value after the next power on and continue to accumulate.