RGND01 Garage Door Remote
You will receive the fully compatible replacement remote control shown in the second picture.
This remote transmits on 433MHz and uses rolling code.
It will be delivered complete with battery and DIY programming instructions.
Postage via Australia Post regular mail service is free, but un-trackable and can be slow outside of capital cities. You can upgrade to Express post for $11.00 during Checkout if you wish.