4 Operation
4.1 Controls
(1) Display Backlit LCD screen with 4 lines of 20 characters each
(2) Key Cursor control/Numerical value increase
(3) Key Choice confirmation/Function change
(4) Key Cursor control/Numerical value decrease Choice of operating menu
(5) Key Value backup/Return to level 1 menu
(6) Key Cancel input without saving/Return to the home screen.