Description: 【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】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. Specification: Material: PP Size Chart: 16.64cmx2.96cmx1.8cm/6.54inchx1.16inchx1.8inch Package Includes: 1 Piece Voltage Tester 1 Piece Manual Note: Please allow slightly errors due to manual measurement and different monitors.