3) 3) BUTTONS BUTTONS (1) (1) Up/left button Up/left button ① ② Move in menu (up, left) Increase input value. 17Z9A3CD27 (2) (2) Down/right button Down/right button ① ② Move in menu (down, right) Decrease input value. 17Z9A3CD28 (3) (3) Menu button Menu button ① Current display to next display. 17Z9A3CD29 (4) (4) Enter and buzzer stop button Enter and buzzer stop button ① ② Select menu (enter). Stop buzzer sound when sound is ON. 17Z9A3CD30 4-7