... for measuring AC,DC,AC&DC signals. WT104 is applicable for measuring AC,DC,AC&DC signals. 1. Function for AC, DC and AC&DC.2. 4 ... Display: V,A,W,PF/Hz.3. All measuredas root mean square value.4. Auto range.5. Voltage: DC ... 600V/75V/35V AC 600V/75V/35V6. Current: DC 20A/2A/0.5A. AC 20A ... .10. Accuracy: ±(0.4%reading+0.1%range+1digit),0.5 class.11. RS-232-C ...