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Three windows display: V, A, W, PF, Hz
Input current: 5mA ~ 20A / 40A
Range switching: Automatic / Manual (current)
Power factor: -1.000 ~ 1.000
Frequency range: AC: 45Hz ~ 65Hz, bandwidth: 5kHz
Accuracy: ± (0.4% of reading + 0.1% of range + 1 digit)
Upper and lower limits judgment function: Set current and power upper and lower limits, and alarm function
Hold function: Use for data fluctuations to read conveniently
