The inductive electric pen breakpoint test and the direct test each have a button. When measuring the voltage, press and hold the direct test button, and then touch the live wire with the tip of the pen to measure the voltage, and the voltage will be displayed on the LCD screen. If it is used to measure the breakpoint inside a section of energized insulated wire, press and hold the breakpoint test button, then touch the insulated wire with the tip of the pen, and gently slide it vertically on the wire, if the wire is a passage somewhere, the display will show A "power on" symbol. If the wire breaks somewhere, the screen doesn't show anything. Be careful not to touch any metal parts when using this type of induction pen to prevent electric shock.
In fact, it is an inductive measurement. Where the sensor wire is broken. Generally, you need to measure the wire of the live wire, and then move the electric pen along the outer skin of the wire. The electric pen will display a sign with induced electricity, and then you keep walking along the wire. When the mark disappears, where is the breakpoint.
