• The Power Probe 3EZ is a Digital Voltmeter that works off 12-24 Volt sources. • Using an Auxiliary Ground cable to check continuity and test components. • This design has an easy 5 mode menu to improve user experience. • The Modes are "Voltmeter", "Peak to Peak", "Max Peak", "Min Peak", and "AC Threshold". • The Power Probe EZ also includes EZ Learning and Diagnostics