0.65" 4-digit digital display; Display type: 7-segment, 3-1/2 digital blue LED; Working power range: DC 6~24V; Working current: <60mA; Measuring input range: DC 0~±20V / 0~±50.0A; Accuracy: =/- 0.2%; Resolution: 0.01V / 0.1A; Conversion rate: 2-3 readings / sec; Please note: a 50A / 75mV shunt must be used for this panel meter.