20
C420 Installation Manual
4 COMMANDS AND INDICATORS
4.1 KEYBOARD
The control panel is equipped with a 12 keys keyboard located on the front panel. For further information, please refer to the
programming manual.
Icon
Name
Function
INCREASE
DELAY
This key only affects running siren output activation delays;
when this key is pressed, each delay is incremented by 1
minute.
SKIP
DELAY
This key only affects running siren output activation delays;
when this key is pressed, the delays are skipped and the siren
output is activated immediately.
SILENCE/REARM
SIRENS
This key silences the siren outputs activated by a previous
alarm condition and rearms the siren outputs previously
silenced through the same key.
MASTER
ALARM
This key activates the master alarm condition.
TEST
LAMP
This key turns all the LEDs ON and activates the buzzer for 3
seconds.
GLOBAL
RESET
This key restores the control panel to the idle state, by deleting
all the active fault and alarm conditions.
UP
DOWN
LEFT
RIGHT
Directional arrows, used for menu navigation.
ESC/MENU
This key allows the user to enter the main menu of the control
panel.
ACK
This key allows the user to acknowledge the events occurred
in the control panel by silencing the sounding buzzer.
A PS2 standard keyboard can be connected to the control panel.
For further information, please refer to the programming manual.