MERLIN+ C940 Garage Door Remote
This is a key ring size and type of Merlin Garage Door Remotes. You will receive the 3 button remote control pictured below the smaller picture (click to enlarge). They are easily programmed to your garage door motor (instructions included).
They transmit on 433mhz and use the rolling code method.
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.