2-1
Chapter 2 Names and Functions of
the Components
Display
Buzzer
Operation panel
Figure 2.1 Operation panel of main display unit
No. Keys Name Functions
1
Power/
Contrast key
Turns on the power. This key also adjusts the screen contrast.
The power is turned off when the
key and this key are
pressed at the same time.
2
Dimmer key
Adjusts the brightness.
3
Menu key
Displays the main menu.
4
Display key Changes the display screen.
5
Clear key Cancels operation and stops the alarm.
6
Cursor key
Moves the cursor.
7
Enter key Sets the entries.
8
USER key Changes the screen to the user registration screen.
9
MODE key Change the user mode.