Hover over the source input field, single-click the drag handle that appears, but do not hold down the mouse button as shown in Figure 11.
将鼠标放到源输入字段上方，单击显示的拖动句柄，但是不要按下鼠标按钮，如图11所示。
Hover over the source input field, single-click the drag handle that appears but do not hold down the mouse button.
悬停在源输入字段上，单击显示的拖动手柄，但不要按住鼠标按键。
When the mouse to check the single lamp control area on the check button, the same way to transfer data through the serial port, the corresponding LED lights up, un-check after the light turns off.
当鼠标勾选单灯控制区复选按钮时，同理通过串口传输数据，相应的LED点亮，取消勾选后该灯熄灭。
When the mouse to check the single lamp control area on the check button, the same way to transfer data through the serial port, the corresponding LED lights up, un-check after the light turns off.
当鼠标勾选单灯控制区复选按钮时，同理通过串口传输数据，相应的LED点亮，取消勾选后该灯熄灭。
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