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What is the scope of the three color screen backlight?

What is the scope of the three color screen backlight?
Update Time:2016-12-29
Display temperature < 37.5 is white; 37.9 or greater display temperature acuity 37.5 orange; According to temperature or 38 is red. (the default fever warning situation, namely the F4 function set value for 38.0.)
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