Dc Volt and Amp Meter

Working voltage of Meter itself:DC 4 – 30V(The maximum input voltage can not exceed 30V. Otherwise the meter will be burned) Working current of Meter itself:≤20mA Voltage Measuring range: DC 0 – 100V Current Measuring range: 0-999mA, 0-10A, 0-50A, 0-100A Voltage resolution (V): 0.1V Current resolution (A): 0.01A Measure accuracy: 1% (± 1 digit) Display: 0.28″ digital tube, Two color blue and red Refresh rate: about 300mS / times Dimensions:48mm*29mm*26mm Operation Temp: -10°- 65°   Wiring Diagram: Black – Red : Working voltage of Meter itself: DC 4 – 30V Black – Yellow : Voltage Measuring range: DC 12V