How to adjust the perpetual calendar clock so as not to tell the time on time? It keeps ringing.

Different brands and models of electronic calendars have different adjustment methods.

Commonly used electronic calendar adjustment are:

In normal mode, press the Add key to turn on the hourly alarm, and the LED will light up. Press it again to cancel the alarm on the hour, and the LED will go out.

There is a mute switch next to the electronic calendar. Just press mute.

Settings-Look at the front display. There are hours, alarms and blanks. Just adjust it to blank.

If you still can't understand the instructions of the electronic calendar.