How to cancel the alarm clock in the electronic perpetual calendar?

This mainly depends on the specific model of the electronic calendar.

The following is the recommended setting method of universal electronic calendar for your reference:

A- date and time setting/moving B- alarm switch on the hour/increasing C- changing the mode of throttle light/decreasing D- alarm setting/moving.

Setting of the Hour Alarm: During normal operation, press the B key, and the Hour Alarm indicator on the panel indicates that the Hour Alarm has been turned on, otherwise it will be turned off.