Genuine Merlin Replacement Garage Door Remotes
MERLIN M842 Garage Door Remote
You will receive the genuine Merlin Garage Door Remote shown here. 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.