VOLTCRAFT V-CHARGE 100 DUO Operating Instructions Manual page 110

Switching the key confirmation/warning sounds on/off
Key Beep
Buzzer
With the option "Key Beep", confirmation beep for each push of a button is switched on ("ON")
or off ("OFF").
The function "Buzzer" switches the signal sound for various functions/warning messages on
("ON") or off ("OFF").
Monitoring of the input voltage
Input Power Low
Cut-Off
This function monitors the voltage at the charger input. This is sensible when a 12 V car lead
battery is used for power supply.
If the voltage drops below the set value, charging is terminated to prevent deep discharge of
the car lead battery.
Display of the rechargeable battery and charger temperatures
Ext.Temp
Int.Temp
This function shows the external rechargeable battery temperature and the internal temperature
of the charger.
The external temperature can only be displayed if an external temperature sensor is
connected to the charger (not enclosed, but available as an accessory).
This temperature sensor is attached to the rechargeable battery.
110
ON
ON
11.0V
0C
27C