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According to the survey, many people realize that after a buzzer exists, they always ask businesses how they can know if the buzzer is good or bad. Indeed, this is still more difficult to see by the naked eye. After a certain period of use, it is natural for an active buzzer to be abnormal. However, it is particularly important how to discern anomalies and handle them based on their sound. Here we recommend several solutions for everyone.

First, check the shell of the buzzer first.

For example, first check whether the shell is damaged, whether the surface is deformed, whether the length of the stitches varies, and whether it is bent.

Second, use an electro-acoustic instrument to test.

The second method is to use a tool to detect, and the tool used here is an electro-acoustic instrument. According to the customer's request, the frequency detection buzzer is consistent and the tolerance cannot exceed plus or minus 5%. Otherwise, it is unqualified. Of course, the sound abnormality test must be performed. After all, the main function of the buzzer is to use sound, sand sound and break sound. , no sound, small sound for substandard products.