Voltage is the same in Australia as it is in Germany (230V). However, the pin layout for the power outlets differs, so you need an adapter to plug in your candle arch.

This adapter does not convert voltage!

This adapter comes with a jack for an euro plug and matches the pin layout for australian power outlets. Also suitable for these countries: Cook Islands, Fiji, Kiribati, Nauru, New Zealand, Papua New Guinea, Samoa, Tonga, Tuvalu, Vanuatu.

Image similar, actual product not shown.