Anything at 12VAC will do! The range of current rating is not important…. anything from 300 milliamps to 5 amps!
Checking on CPC I see what you mean…. the only thing I could find on there was PW05886 which is a strange 11.5VAC output device. I’m fairly sure that would work OK; I can’t guarantee it but at that price it’s worth a try!