Koga E-BIKE ION - Manual (Page 20)

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2.8 Menu setting explanation
2.8.1 Lighting
You can set whether you wish the lights to be switched on automatically or
whether you wish to do this manually under Lighting.
If you select Auto, the bicycle lighting will be switched on and off
automatically. A light sensor will continuously measure the quantity of light
and will switch the lights on and off based on this.
If you select Manual, the bicycle lighting will only be switched on or off
when you use the lights button on the control unit.
2.8.2 Beep Signals
You can set whether and when you wish to hear beep signals under
Beepers.
If you select On, the display will emit five long beeps when there is a
message on the display. In addition, you will also hear a short beep signal
when you press the control unit buttons, after calibrating and after resetting
a ride.
If you select On alerts, the display will emit five long beep signals when
there is a message. Your display will not emit beep signals with this setting
when the control unit buttons are pressed, after calibrating and after
resetting a ride.
If you select Off, the display will not issue beep signals when operating the
control unit nor when there are alerts, after calibrating and after resetting a
ride.