Pro-face新标准：节能环保标配LED背光灯的LCD + 调光设置。极大地提高了能效。为了减少现场的能耗，GP4000系列采用了多种节能措施（如：所有机型都配有LED背光灯）， 并使用调光设置功能，使机器在无操作一段时间后，将先调暗亮度再最终进入待机状态。
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