What model of collar should I buy for this?

[BulldogPutt]

I was thinking of going for a Type 1 collar since that seems easier to setup. Could you point me in the right direction of which collar I should buy that you know will be compatible with this library? I'd hate to buy a random one and find it doesn't work.
Thanks

[CrashOverride85]

Hi, I'm afraid I can't :(
I got mine a couple of years ago from random listings on aliexpress and ebay which will be long gone.

I suspect the odds of it working are pretty good if it looks the same, and you make sure it is the 433mhz version. Some listings state the frequency, some don't (although I think most are 433MHz), so I'd suggest getting one that does state it.