1200C-2000C Fire Alarm Control Panel and Repeater User Manual  7 
Sounder buttons and indicators 
Figure 4: Sounder buttons and indicators 
 
1. Sound 
2. Delay ON/OFF 
3. Fault/Disable 
4. Silence 
Note: Some features can only be accessed if the key switch is enabled (see “Key 
switch operation” on page 2). 
Table 5: Description of sounders LED indicators 
LED indicator  Key switch position  Description 
Sound    A red LED indicates that the sounders are activate 
(sounding). 
Delay ON/OFF    A single LED indicates that the sounder delay has been 
toggled ON or OFF. 
Fault/Disable  Enabled  Press the Fault/Disable button to disable the sounders. 
The LED flashes when a fault is detected and is steady 
when the sounders are disabled. 
Silence  Enabled  A yellow LED indicates that the sounders have been 
silenced. 
 
Note: Functionality of the Sound and Silence buttons is defined by the control panel 
operating mode.