Plastimo ECHOFISH 820 Manuel D'installation Et D'utilisation page 37

Sometimes after you have made some settings and want to
return to the original operation setting, then you can use the
Reset Settings to reset all the current options and settings
to the original factory defaults.
To set the Load Default:
1) Press MENU to enter into menu setting.
2) Use the Up/Down Arrow to select System option.
3) Press Right Arrow to enter into System setting.
4) Use the Up/Down Arrow to select the Load Default option.
5) Press Right Arrow to enter into the setting.
6) Press Up/Down Arrow to change the option.
7) Press ENT to confirm the setting.
8) Press EXIT to exit the menu setting.
19. Temperature units
Fahrenheit and Celsius are available for the temperature
measure.
To set the Tem-
perature:
1) Press MENU to enter into menu setting.
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Echofish 820 – Installation & Operation manual