Features Multifunction: This inductive voltage test pen can be used for neutral wire testing, line on-off detection, etc. Fine Tip: The pen head is designed as a screwdriver bit, standard size, convenient for contact and assembly and disassembly. High brightness: The built-in high brightness LED lamp bead is intuitive for testing, making measurement and operation much easier. High security: Thanks to the intelligent motherboard chip, the screwdriver test pen offers higher security and a longer service life. Convenient Carrying: Due to its compact size and light weight, the electric test pen is very convenient to carry. Specification: Item Type: Electrical Test Pen Model: B04 Material: ABS, chrome vanadium steel Battery: 3 x LR41 button battery, with built-in battery. Single battery capacity: 25mAh Package list: 6x Electrical test pen Package List 6 x Electrical Tester Pen