Check the listing for details. Clamp-on Current Probe Open-close Transformer 10A~200A Current Detection. Condition: New. Listed at 64.99 USD. LOTO oscilloscope provides two typesClamp mutual inductanceElectric current probe, OKNon-contactThe waveform data of the current passing through the measuring cable. One is AC series in blue and the other is CxxB series in black. The former can only measureDeliveryCurrent signal, the latterCross alignmentCurrent signals can be measured. The former AC series is a passive probe and does not require power supply. The latter CxxB series isActiveElectric current probe, need external power supply to work, the former is cheaper than the latter. AC series Opening size: 13mmX13mm Non-linearity: +- 3% Lead length: 1 m Electrical strength 6000V AC/1min Measurement frequency range: 50Hz ~ 150K Hz Accuracy: 1% LOTO electric current probe can be used not only for LOTO virtual oscilloscope, but also for multimeter and traditional desktop digital oscilloscope. CxxB series Opening size: 13mmX13mm Measurement frequency range: DC ~ 25K Hz Accuracy: 1% Zero offset voltage: