We have previously posted on the 
new window safety requirements, which come into effect in NSW on 13 March 2018.
“To prevent children falling from windows, all strata buildings in NSW must be fitted with devices that enable their windows to be locked at 12.5cm when the devices are engaged. Owners corporations must have devices installed on all common property windows above the ground floor by 13 March 2018. The safety devices must be robust and childproof.”
The NSW Fair Trading Department has a lots of useful information, and we strongly recommend that you check whether your building is compliant. Have a look at their dedicated window safety page here.
In case of any questions, please check with your strata manager.