Moisture sensors that measure conductivity are pretty useless unless frequently recalibrated but time domain reflectometry sensors are much better and more accu

Moisture sensors that measure conductivity are pretty useless unless frequently recalibrated but time domain reflectometry sensors are much better and more accurate. I use the VH400 from Vegetronix: https://www.vegetronix.com/Products/VH400/ https://www.vegetronix.com/Products/VH400/