The buzzer function is an additional function of the digital multimeter. It is generally used in the 2KΩ range. Generally, when the line (or resistance) with a resistance value of 50Ω or less is measured, the built-in buzzer sounds. In practice, this function is very useful, it can improve the work efficiency of measuring the on-off of the circuit, and it is an essential function of instruments and meters for electronic maintenance.
