Sourcing a 3+ channel z-wave relay - Heltun?

Hi Folks, any ideas where i can find a 3channel (or more) z-wave relay from?

I have a few heltun 5 channel modules, but nobody seems to be selling heltun anymore? have they gone bust?

any ideas for an alternative, i have a 3 speed manual pull chain fan that i want to control via z-wave…