Interlogix ATSx500A Series Installation And Programming Manual page 239

During daylight saving time change, the time always advances on Sunday at
2:00, and rewinds at 3:00.
Note: See "Daylight saving note" on page 78 for information on daylight saving
time change on programmed actions.
8.1.2 Siren options
1>Activation
2 Delay
The Siren options menu allows you to set timers applicable to internal and
external sirens.
Select whether you want to change activation time or siren delay.
8.1.2.1 Activation
1>Internal siren
00:03'00
The Activation menu allows you to set the activation time both for internal and
external siren.
8.1.2.1.1 Internal siren
8.1.2.1.2 External siren
Enter the activation time for the internal / external siren. The input format is
hh:mm'ss. The allowed range is from 00:00'00 to 06:00'00. The value 00:00'00
means that the siren does not activate. The value 06:00'00 is equal to infinite
time (the siren is active until unset or reset).
8.1.2.1.3 F/P/M internal
8.1.2.1.4 F/P/M external
Enter the activation time for the internal / external siren in case of fire, panic, and
medical alarms. The input format is hh:mm'ss. The allowed range is from
00:00'00 to 06:00'00. The value 00:00'00 means that the siren does not activate.
The value 06:00'00 is equal to infinite time (the siren is active until unset or
reset).
8.1.2.2 Delay time
1>Internal siren
00:00'00
The Delay time menu allows you to set the delay time before an internal or
external siren is activated.
Advisor Advanced ATSx500A(-IP) Installation and Programming Manual
Chapter 5: Menu reference
233