The Extech EX411 offers multiple functions so you can carry one meter into the field instead of several. The manual-ranging Extech EX411 measures AC/DC voltage, AC/DC current, resistance, diode, and continuity, all with +/-0.5 percent basic accuracy. The unit has low current capability, measuring down to 0.1uA, and features input fuse protection and mis-connection warnings. A Type K thermometer is built in for surface or air temperature measurements.