I fear you may get mislead, by referring to the RTA on this matter. The Qld Government Department that monitors the legislation is Qld Fire and Rescue Dept, and here is the website that you should read from, for the correct information.
http://www.fire.qld.gov.au/communitysafety/smokealarms/legislation.asp
Fines range from $350+ dollars upwards, and we know of one landlord charged over a death. PM's are there to monitor the tenancy, no the compliance of the building to the new building codes. I believe that, like all other building code requirements, belong to the landlord. The PM's do their utmost to follow and understand the impact of the different legislations regulations etc, as well as the building code, and can advise you, that some thing may in fact not comply, however we are not certified to make specific comments etc, but can suggest that you have some one that is qualified and insured to provide that advice. Yes, we do know that some companies do fall short on their staff training etc, the pink bat debarcle again confirmed that, however the reality is, you have at least done your best is so far as your duty of care is concerned. No one wants additional costs, yes we do know the risks and costs that LL's already have to bare, and we do our best to generate the best return we can, but carrying dowel, ladder and cleaning equipment on inspections ...... sorry I dont think that PM's will see that within their briefs.
Please make sure that you read, and understand the legislation. Saving a dollar, and then leaving your self exposed may not be the wisest step to take.