Down buttons;
Press it to activate the hidden selections and change the setting with Up and Down (or Left
and Right) buttons.
Menu – Press this button to step back
Lock – Locking the screen / cancelling the lock state, and entering the main menu after the
initialization of the device. After pressing lock key, the system will question the users to save
present setting or not. If not, the LCD will display the current configuration state.
When the power is connected, the LCD will start to initialize the program. The LCD menu goes
as below chart.
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