[Electricity Tester]Experience the convenience of a dual-purpose tool that can be used as both an electrical tester and a screwdriver Essential for testing AC/DC circuits, this versatile device features a clear neon display that indicates voltage presence and intensity. Designed for accuracy and reliability, this test pen features a neon tube display that gets brighter as the voltage increases. It is an indispensable tool for electricians and DIY enthusiasts to test voltage safely and accurately. [Voltage Tester Screwdriver]The screwdriver head is cleverly designed with flat head screw slots / cross head screw slots [How to Use] Make sure the screwdriver is fully inserted before testing, place your finger on the end of the handle to keep it steady, when voltage is detected, the neon tube will light up, providing a visual indication that the circuit exists. Colour:As Shown Material:Carbon steel + PP Package Contents: 10 x Electric pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.