Reddit reviews Ambient Weather WS-8482-3107 7-Channel WiFi Remote Monitoring Weather Station with Indoor/Outdoor Temperature & Humidity, Floating Pool, Spa & Pond Thermometer
We found 1 Reddit comments about Ambient Weather WS-8482-3107 7-Channel WiFi Remote Monitoring Weather Station with Indoor/Outdoor Temperature & Humidity, Floating Pool, Spa & Pond Thermometer. Here are the top ones, ranked by their Reddit score.
This isn't DIY but it works really well in my spa and pool and integrated into HA seamlessly - I assume SmartThings would be even easier
https://www.amazon.com/dp/B07MGJ4F4T