I would do this with a home-made esphome (like other have suggested). If it has to be a commercial product, you can buy the shelly addon and attach it to any of their Z-wave 1pm products like this one for example.

The addon supports up to four temperature probes and the cables can be many metres long.

I mean, they’re offering a 1 year fixed rate bond and paying 6.71% interest, no wonder they went bust 🤭