What is the function of "EPS Mute" in my inverter settings?

Via this setting you can choose whether the buzzer is turned on when the inverter is running in EPS mode. Select Yes, the buzzer mutes, select NO, EPS mode, the buzzer will sound once every 4s when the battery is fully charged, the closer the battery is to the empty state, the higher the buzzer will sound, to remind users to avoid battery loss.