Digital multimeter is a commonly used tool for measuring current, voltage and resistance. We will often use it in maintenance, but for beginners, the use of digital multimeter is not very understanding, the following introduces the two use methods of digital multimeter
The use of digital multimeter method 1: Determine whether the line or device is charged
The AC voltage file of the digital multimeter is very sensitive, even if there is a small induction voltage around it can be displayed, according to this feature, it can be used as a test pen. Usage is as follows:
Two methods of digital multimeter use are introduced

The multimeter is hit to AC20V gear, the black watch pen is suspended, and the handheld red watch pen is in contact with the side route or device, then the multimeter will have a display, if the display number is between a few volts and ten volts (different multimeters will have different displays), indicating that the line or device is charged, if the display is zero or very small, indicating that the line or device is not charged.
The use of digital multimeter method two: Distinguish the power supply line is the live line or the neutral line
The first method: can be judged by the above method. The larger display number is the fireline, and the smaller display number is the neutral line, which requires contact with the measured line or device.