Comfortable Handle: This electronic voltage tester pen is equipped with a non-slip handle to ensure a comfortable and stable grip during use. It is ideal for testing AC/DC circuits and provides a safe and reliable user experience. 2-in-1 Magnetic Screwdriver Test Pen: One for measuring with an electric pen and the other as a screwdriver. The screwdriver head has slots on both ends of the metal shaft with slots for flathead and Phillips heads. When removing the metal shaft, insert it as far as possible to achieve full contact. Dual Function: Both the slotted screwdriver head and the Phillips screwdriver head have a powerful magnetic design, which can clamp screws and small metal parts, improving efficiency and ease of use when working. Non-Contact Voltage Tester: Tester pen with advanced NCV function. Detects voltages from 70V to 250V and includes breakpoint detection. Intelligent line/zero recognition. The built-in high-brightness display ensures accurate testing even in low light conditions and is suitable for electrical equipment maintenance. How to use: Place your finger on the upper copper cover of the current tester and place the metal drill bit on the hole in the plug. Live line: The red light and green light are on at the same time. At the zero line: Only the green light is on. If the light does not light up, the circuit is not working. This product has a cross-shaped head that can be used as a Phillips screwdriver to tighten screws.