This Little Tool Will Do A Really Big Job For You. It Tests: Outlets, Switches, Fuses, Spark Plugs, And Condensers. It Checks For: Current, Dc Polarity, Frequency, And Polyphase Line. All This In A Pocket Sized, Lightweight Convenient Size.

* Only 4.25-inch long - can very easily store in your tool pouch or tool bag

* Tests multiple voltage settings - 110v, 220v, 277v and 460v - reliable and accurate

* Useful for: outlets, switches, fuses, sparkplugs, condensers, current, DC polarity, frequency

* To use - make sure only touch insulated portion - not the metal portion - insert into outlet

* Excellent tool when working with home electricity - requires no battery