Mini Digital Voltmeter Ammeter DC100V 10A Dual colour Red and Blue 0.28" size 7 segment 3 digit display. This is Micro controller based Panel Mount meter.      

Specifications:  

Working voltage of Meter DC 4 - 30V (The maximum input voltage cannot exceed 30V. Otherwise the meter will be burned)    
Working current of Meter itself: ≤20mA    
Voltage measuring range: DC 0 - 100V    
Current Measuring range: DC 0 - 10A    
Voltage resolution (V): 0.1V    
Current resolution (A): 0.01A    
Measure accuracy: 1% (± 1 digit)    
Display: 0.28" digital tube, Two colour blue and red    
Refresh rate: about 300mS / times    
Dimensions: 48mm*29mm*26mm    
Operation Temp: -10°-+65°