[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 is cleverly designed with flat screw slots [How to Use] Make sure the screwdriver is fully inserted before testing, place your finger on of the handle to keep it steady, when voltage is detected, the neon tube 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.