1.Enhanced Electrical Testing: By using our Voltage Tester Screwdriver, you can easily identify the exact voltage amount. A green light signifies that the wire core has been accurately touched, while lightoff indicates the core needs to be adjusted 2.Enhanced Efficiency: By combining the functionality of a Voltage Tester pen and Screwdriver, this tool proves to be a versatile asset for any electrician. It enables simple testing of voltage as well as securely fixing screws with ease, making it a musthave for any toolkit 3.Precise Voltage Verification: The Voltage Tester Screwdriver provides clear visual feedback. The display lights up upon detecting voltage, with the brightness of the light increasing consistently for improved accuracy voltage escalation 4.Enhanced Efficiency: Featuring a magnetic screwdriver head that attracts screws and small metal parts, this Voltage Tester Screwdriver increases productivity while helping you avoid losing vital components