You can control how loud, or quiet, the beep noise is on your central hub when you tap the keypad keys very easily.

1. Tap the hub screen to wake the system up
2. Enter your user PIN
3. Tap the Red Cross to bypass any on-screen messages
4. Tap Settings > Volume
5. Select the volume level for the keypad from Off to no beeps to High for a loud beep
6. Tap the Green Cross to save your selection
7. Tap the Red Cross to return to the settings menu
8. Tap the Red Cross  to get back to the man menu or twice to return to the locked home screen

Your new keypad volume level is now set.