The ability to mute the keypad tone on a microwave oven depends on the specific model and its features. While many modern microwave ovens offer the option to adjust or disable the keypad tone, it's best to consult the user manual that came with your microwave oven to determine if this feature is available and how to access it.
Typically, microwave ovens have settings or options that allow you to adjust various sound settings, including the keypad tone. These settings may be accessed through the control panel or a dedicated menu on the microwave. If the option to mute or adjust the keypad tone is available, the manual should provide instructions on how to navigate to the appropriate menu and make the desired changes.
If you don't have access to the user manual or are unable to find the specific information regarding the keypad tone, you may consider reaching out to the manufacturer's customer support for assistance. They should be able to provide guidance on whether muting the keypad tone is possible and how to do it on your particular microwave oven model.