Precision Digital Gauge/Indicator 1.large-screen LED display 2.USB and ... method, pls refer to P22. VoltageMeasurement:0-30V, 0-5V, accuracy: ±(0.001% RD+0.005% F·S), input resistance ... % F·S), output resistance< 1Ω.3. CurrentMeasurement: 0-30mA, accuracy: ±(0.001% RD+0.005% F·S), input resistance: ... >5 MΩ(additionally adding fuse resistance)Output:0~30mA, accuracy: ±(0.001% RD+0.005% F·S)4. ...