Shimano STEPS E8000 Originalbetriebsanleitung Seite 102

Very rarely, certain equipment (televisions, PCs, radios,
etc.) or places (level crossings, TV broadcast stations,
radar stations, etc. ) can cause electromagnetic waves and
interference which can disrupt the transfer.
6.3.1.5 Brightness
You can adjust the brightness of the display to improve legibility:
1.
Navigate to "Brightness" as described in  5.7 Configuring settings in
the main menu Page EN-34.
You can choose between:
Brightness
Selected
brightness
Darker – Brighter
2. Use the / buttons to select the brightness required. The selected
brightness is shown in a framed box.
3. Press the Display button to confirm. You return to the main menu.
EN-42 Original User Guide | Pedelec Shimano Steps E8000 Version 1
6.3.1.6 Signal
The beeping tone which is heard when any button is pressed can be
deactivated.
1. Navigate to "Signal" as described in  5.7 Configuring settings in the
main menu Page EN-34.
You can choose between:
ON
Activate acoustic signal
OFF Deactivate acoustic
signal
2. Press the Display button to save the settings. You return to the main
menu.
Even when the acoustic signal is deactivated, a signal will
be heard when an operating error, system error, etc., occurs.
Beep
ON
OFF
Activate acoustic signal