Are you up to speed with smoke alarms? Changes affecting Property Owners a must read:

For dwellings being sold, leased or an existing lease renewed

Existing smoke alarms manufactured more than 10 years ago must be replaced with photoelectric smoke alarms which comply with Australian Standards (AS) 3786-2014. (Note: the date should be stamped on the back)
Smoke alarms that do not operate when tested must be replaced immediately.
Existing hardwired smoke alarms that need replacement, must be replaced with a hardwired photoelectric smoke alarm.
It is also recommended that:
smoke alarms be either hardwired or
powered by a non-removable 10-year battery; and
ionisation smoke alarms be replaced with photoelectric type as soon as possible.
For the best protection smoke alarms should be installed on each storey:
in every bedroom
in hallways which connect bedrooms and the rest of the dwelling
if there is no hallway, between the bedrooms and other parts of the storey; and
if there are no bedrooms on a storey, at least one smoke alarm should be installed in the most likely path of travel to exit the dwelling.
All smoke alarms should be interconnected.
To get everyone out safely during a house fire, it is essential to also have a well-practised fire escape plan.
Existing landlord’s and tenant’s obligations continue. Property sellers must continue to lodge a Form 24 stating the requirements of the legislation have been met. See New Smoke Alarm Legislation for more details.

All homes or units being sold or leased, or existing leases renewed, will require the installation of hardwired photoelectric, interconnected smoke alarms. If a hardwired smoke alarm cannot be installed, non-removable 10-year battery smoke alarms can be installed in place.
Smoke alarms in the dwelling must:
be photoelectric (AS3786-2014); and
not also contain an ionisation sensor; and
Be hardwired to the mains power supply with a backup power source (i.e. battery), although dwellings which were existing prior to 1 Jan 2017 can be hardwired or powered by a non-removable 10-year battery, or a combination of both.
be interconnected with every other smoke alarm in the dwelling so all activate together.
The legislation requires smoke alarms must be installed in the following locations:

on each storey
in each bedroom
in hallways that connect bedrooms and the rest of the dwelling
if there is no hallway, between the bedroom and other parts of the storey; and
if there are no bedrooms on a storey, at least one smoke alarm must be installed in the most likely path of travel to exit the dwelling.
If a smoke alarm which is hardwired to the domestic power supply needs replacement, it must be replaced with a hardwired photoelectric smoke alarm.