Extech EX320 Mini Digital Multimeter offers AC/DC Voltage, AC/DC Current, Resistance, Diode, and Continuity testing plus a built-in non-contact Voltage Detector. Proper use and care of this meter will provide many years of reliable service. Extech EX320 Mini Digital Multimeter and Voltage Detector with NCV is easy to use autoranging multimeter with Max Hold function.