Features MULTIFUNCTIONAL This inductive voltage test pen can be used to test neutral wires, line on-off detection, etc. Fine Tip The pen head is designed as a screwdriver bit, standard size, convenient for contact, 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 smart chip of the motherboard, the screwdriver test pen provides higher safety and 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: electric test pen. Model No.: B04. Material: ABS, chrome vanadium steel Battery: 3 x LR41 button cells, with built-in battery. Single battery capacity: 25 mAh Package List: 6 x Electric Test Pens Package List 6 x Electrical Tester Pen