Current Probe (For LabQuest, LabPro, Go! Link, EasyLink, CBL 2, and CBL)...Use the Current Probe to measure currents in low-voltage AC and DC circuits. With a range of +/-0.6 A, this system is ideal for use in most "battery and bulb" circuits. Use it with the Differential Voltage Probe to explore Ohm s law, phase relationships in reactive components, and much more. Use multiple sensors to explore series and parallel circuits. It can also be used in electrochemistry experiments.