Touch the LCD Display Neon-electroscope Detector Tester Pen Tool AN-100 to a terminal strip， outlet or cord. When the tip glows red， and the unit beeps， you know there's voltage in the line. Electricians， maintenance， service， safety personnel can quickly test for energized circuits and defective grounds on the factory floor or other places.                                    Features            LCD display for double safety <br>The black neon-electroscope tool can find phase line， group line and breakpoint of phase line<br>This test pencil Tool has voltage test， induction test and breakpoint test<br>No batteries needed<br>Designed with clip at the back， quite easy to carry<br>Color: Black<br>                                                                                                Package Includes             1 x Test pencil tool<br>