The new TH300 is a fast, accurate and completely portable soil moisture probe. Based on TH2O, Theta probe technology, the TH300 uses the SM150 soil moisture sensors. Results are in water by volume (± 2.5%). The HH2 readout stores over 1000 data points, which can be downloaded to a PC and imported into spreadsheets. Excellent for golf courses, sports field maintenance, and irrigation scheduling. The SM300 minimizes soil disturbance, preserving the original soil structure around the measurement rods. It is easy to insert and install whether at the soil surface or at depth.


The SM300 is a dual-purpose probe – it can be used both with the HH2 hand-held Moisture Meter for instant moisture readings, or left in situ for data logging of moisture and temperature.

Dynamax, Inc