... )Digital Circuit LED Display 3)Automatic voltage regulation 4)Wide Input Voltage Range 5)Large Capacity, High precision ... : 50/60Hz Efficiency: >97% Meter Display Status: Input Voltage /Output Voltage /Output Current LED Display Status: Device on, Delay ... in progress, Output suppressed, Input voltage out of range. Protection: High Voltage Protection, Low Voltage Protection, Overload Protection, High ...