Swann PRO-T853 Reference Manual page 6

WB (White Balance)
ATW (Automatic White Balance):
according to the light it receives. We recommend you use this setting in
most circumstances.
MWB (Manual White Balance):
(amplification) of the red and blue channel (RGain and BGain respectively)
to adjust the color of the image.
WB
MODE
RETURN
The camera sets the White Balance
The user can then select the gain
ATW
Return:
Select this to go back to the Main Menu.
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