BAFANG C961 Manual page 13

Wheel size setting
Press  or  to change the wheel size. Range from 8 to 32
inch. Press  to save & go to sleep time interval setting.
Sleep time interval setting
Press  or  to change the time, range from 0 to 60 minutes.
Display will sleep and cut off power after no operation on
system for the selected time. Press  to save and skip to
level amount setting.
Power level amount setting
Press  or  to change the amount. The range from 2 to 9
levels (excluding level 0).
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