In duct humidity sensor

Does anyone know of a humidity sensor that would not be damaged if placed in the supply duct of my heating and AC? Or a sensor with a probe that I can put the probe in the duct?

Sonoff do a th16 or th10depends how much current you want to switch. The humidity probe is separate to the smart device so only the probe would sit in the detecting zone.

Mike! Are the TH16 recognized by SmartThings version 2 hubs? I just want to see the Humidity reading not control anything directly.

Yes they are recognised and show the relevant reading.

OK thanks, then all it needs is power?

Yes and obv a WiFi connection

Thanks, on my list.