USB Digital Meter and Tester USB A Basic DC Voltage Accuracy +/-1.0 Percent Basic DC Current Accuracy +/-1 Percent Maximum DC Voltage Measurement 20 V Special Features Built to Withstand a 6.6-Foot (2m) Drop Hi-Resolution LCD for Clear Visibility in Environments With Low Ambient Lighting Maximum DC Current Measurement 3 A Parameters Measured Resistance AC Response Calculation TRMS