If you are looking for a Tiltamatic Garage Door Remote Replacement, this is the best place to get it from: https://www.thewarehouse.co.nz/p/tiltamatic-parker-garage-door-remote-replacement/M36456295.html
Other places charge over $60! This works and is great.
Here is the manual if you need it as well.
This is my actual unit. It is at least over 20 years old now but still going strong.