Available in store or online. Normally $17.98 if I remember correctly (store label still shows normal price but also $4.75 at check out).
Twin Pack of the same model is still $33: https://www.bunnings.co.nz/family-shield-photoelectric-longl…
This price is a steal for longlife smoke alarms, time to stock up or replace for your home or rental properties. I have never seen 10-year longlife alarms at this price, not sure if it is an error so act quickly!
Cheaper to replace current than buying new batteries I guess as well. Does anyone have experience of these and do they accidentally go off for no reason at 2 or 3am in the morning or when using a toaster and not burning toast :(