Smart Electric Voltage Tester Pen combines a convenient voltage testing function with a screwdriver design for everyday electrical work. Designed to detect AC/DC voltage and featuring a clear LED indicator, it helps identify electrical current quickly and conveniently. Its compact pen-style design is easy to carry and suitable for electricians, technicians, DIY projects, home maintenance, and basic circuit testing. A practical tool for checking electrical connections, outlets, wires, and circuits.