Deli 4x190mm Large Test Pen Screwdriver

It is a test screwdriver used to detect electric current in electrical outlets or connecting wires.

When the metal blade of the screwdriver is inserted into one of the outlet's terminals or touches a wire, with one finger placed on the back of the screwdriver, the lamp illuminates, indicating the presence of electric current. If it does not illuminate, it means there is no electric current.

Technical Specifications