This 2 count tester set is designed for AC/DC circuit detection and everyday tool use. It combines an electronic pen sensor with a dual-use design, making it suitable for users who need a simple testing tool and a screwdriver-style function in one set. The neon tube display provides a visible light indication when detecting current, and the stronger the current, the brighter the neon light becomes. For more stable use, the handle features an anti-slip grip. The metal rod includes flathead and Phillips slots at the ends, and the tips are magnetic to help attract screws and small metal parts. When using the testing probe, the rod should be inserted fully at the bottom before testing, and a finger should be fixed at the end of the handle during use.