... Voltage 300V (PK-PK)CAT II Input Coupling AC,DC Input Impedance 1MΩ±2% in parallel with ... waveforms, 4 settings OtherPower supply 100-240 V AC,50Hz-60 Hz,CAT II PC interface RS232 ... 1X,10X,100X,1000XMax. input voltage: 300V(DC + AC PK-PK, 1MΩ input impedance,probe attenuation)Record ... FFTWaveform storage:4 waveformsCommunication interface:USBPower supply: 100V-240V AC, 50Hz,CATFuse:1A , T class, 250V