Daylight Savings Time - Can this affect the operation of a Fire Alarm System?

With a land mass close to 7.7 million square kilometres, Australia is the world's sixth largest country and is divided into three separate time zones.

Daylight Saving Time (DST) is the practice of advancing clocks one hour during the warmer months of the year. In Australia, Daylight saving is observed in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory.

Daylight saving is not observed in Queensland, the Northern Territory or Western Australia.

Daylight Saving Time begins at 2am on the first Sunday in October, when clocks are put forward one hour. It ends at 2am (which is 3am Daylight Saving Time) on the first Sunday in April, when clocks are put back one hour.1

Many types of fire detection & alarm systems are fitted with a real time clock to record the history of events in chronological order. This same clock may also be used to dynamically change the operation of the system according to the time of day.

Some fire detection & alarm systems also have the capacity to automatically adjust the internal clock to reflect the change to/from daylight savings time.

There are many makes and models of fire detection & alarm systems, each one variations to this functionality. To this end, Firewize recommends that any control panel fitted with a real time clock be inspected and if required updated to reflect the current time of day.

For building owners and agents of owners, this should be carried out as soon as practical after the change in time.

Adjusting the date/time of a fire detection and alarm system should be carried out by an appropriately licensed and competent person. (The license part here is very important as some systems require a licensed person to operate them such as systems that control the discharge of a gaseous fire suppression agent).

For more information, you can contact Firewize support and log a support request by calling 1300 30 88 22 or email

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Just realize the daylight time for alarm systems
Submitted by Anonymous (not verified) on October 8, 2013 - 00:19.

We thought many types of fire alarm panel can't allow user to set the internal time. Majority home alarm systems are monitored by third-party security company. Therefore the daylight time changes can be made by the alarm receiving center.

Monitoring Companies
Submitted by rporteous on October 21, 2013 - 11:15.

Thanks for your feedback. The types of fire detection & alarm systems referred to in this article are commercial systems (as compared to residential systems). The date/time of these systems can be set from at the control panel.