*Accuracy: ±0.05% F.S. ±1 digit. *Measuring DC power parameters: V, A, W, Watt-Hour. *DC voltage input (0~99.99V / 0~600.0V) auto switchable. *Display range: 0~9999 (Current / W / KW); 0~99999999 (Watt-Hour). *RS-485 communication optional.