... voltage and current range.II. Features & Functions1. 7″ true color TFT light LCD with 800 X 480 resolution ratio is adopted. On ... . Voltage input: 30V~560V; Four shift: 60V, 120V, 240V, 480V, automatic gear shift. 4. Current input: built-in current transformer: 1mA ... ~12A, automatic gear shift. Clamp meter: 5A, 10A, 20A, 100A, 200A, 500A ...