ITEM NAME:0.28'' Blue Red LED Digital Amp Voltage Current Meter Ammeter Voltmeter 50A Description: Display the DC voltage and current simultaneously by LED digital tube. Including one independent small precise current regulator with a rear cover. Wide measurement voltage and current range. The voltage ampere monitor gauge is.Including one independent small precise current regulator with a rear cover. Display color: Red, Blue. Current Testing Range: 0-50 A; Â ±1%. Display: 0.28 "dual 3 digital tube.