I’m not 100% sure, but I think the Tuya Zigbee MS104z Will work out of the box with smartthings. It’s sold under a bunch of different brand names, including MOES and Samotech. Quite a few people On Hubitat use it.
Zigbee Dry Contact? - 🛎️ Get Help - Hubitat
I believe that’s the same model that @Andremain reported on a little while ago.
You have to wire that into the mains, though, so I don’t know if that’s what you’re looking for.
Also, check The model number carefully, there is an identical looking version which is Wi-Fi only. That one is MS104 (no “z”). The zigbee model has the “z” in the model number: MS104z.