10-Piece Electrician's Screwdriver Tester Set, Standard Tester with Flathead Screwdriver, 3-in-1 Phase Tester, for Validating Electrical Connections, 100V-500V, Practical Tool for Home and Professiona

Wide Measuring Range: Capable of testing from 100 to 500 volts, this multi-functional voltage tester is essential for diagnosing electrical problems in various environments.

Multifunctional Design: In addition to its primary function as a phase tester, this device also serves as a flathead screwdriver, increasing its usefulness in your toolbox.

Safe Use: Phase Tester Equipped with a series resistor for harmless current and a light indicator for accurate diagnosis, ensuring safe use even for non-professionals.

Essential Tool: Electrician's test screwdriver Ideal for daily checks of the integrity of household electrical installations, such as wall sockets and lighting connections.

Robustness and Reliability: Made with high-quality materials, this electrician's test screwdriver ensures increased durability and withstands the rigors of daily use.

10 * Test Screwdrivers (100 - 500V)