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3.2 Control and LC-Display
3.2.1 Control buttons
The ST450EC features capacitive control buttons which can be operated through the glass
cover, without the need to remove the lid.
Use the and buttons are to navigate through various menus.
Use the button to select the highlighted option.
3.2.2 Front panel Status-LED
The front panel status LED offers fast status information of the sensing head and offers the
following information.
High alarm (A2) and Overload