[Portable]Voltage tester with pen type design,lightweight and compact size,easy to carry [LCD Display]Smart induction tester pen with LCD display and LED light,suitable for measurement in various environments [Feature] for Touch the pole with your hand and insert the metal tip the pen into the hole.The red screen and beep sound are the live wire; the green screen displays the voltage of 0V and is the zero wire [Easy to Use]The metal probe of tester easily pierces wire insulation to check circuitry [Application]Multifunctional measuring tool for DC Voltage detection,On off testing,Resistance test.Great for checking circuits,fuses,switches and wiring in cars, Weight: 0.11464037624 Pounds, Manufacturer: QLECXZI