Solar powered, real time data to your phone. One has a rain bucket on it. Each one uses cellular communication so you can put them anywhere. 3Ft long probe, you can set on your phone multiple readings depths anywhere on the 3ft pole. The box mounts on a steel t post. They were used for 3 years. Stored inside heated shop when not in use. $1,000 each Text is best

This youtube video shows about them.

https://youtu.be/TNRTnmMoipY