3.3.4 Internal alarm indicator
The internal alarm indicator's LED has two colors and shows the operating
condition of the radio fire detector.
1
1 Internal alarm indicator
The table below describes the flashing behavior of the internal alarm indicator in
the radio fire detector FDOOT271-O:
Several flashing patterns are available for normal operation. The flashing pattern
is selected using the panel configuration program.
Operating condition
Flashing
mode
Graphic
Alarm
IAI flashes
red once a
second
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
Alarm in test mode
IAI flashes
green twice
every
four seconds
and red every
second in-
between
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
Fault
There is an error.
IAI flashes
red four times
every second
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
Structure and function
Function
3
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