The Moisture Meter type HH2 is a versatile readout unit for use with soil moisture sensors: the Profile Probe, ThetaProbe, SM200 and WET Sensor.

The HH2 offers impressive functionality in a compact, hand-held unit, designed for field use. Readings are displayed on the LCD and can be stored to memory for later download to a PC.

The unit can be operated with one hand, for convenience in the field. Each time-stamped reading includes a unique sample number, a plot identification number (A to Z), and a sensor location number (1 to 255).

Data is transferred to a PC using the RS-232 cable provided with each unit. The HH2Read Windows PC software provides a data import wizard for direct download into Excel or other PC spreadsheet packages, or into irrigation scheduling programs. Alternatively, data can be downloaded in comma-separated ASCII data file (.CSV) format.


  • Holds multiple user-defined soil types
  • Stores up to 2000 time-stamped readings
  • Includes PC data collection software
Input connections 1 water content sensor or 1 WET Sensor
Control outputs -
Readings stored 1,500
Recording rate -
Configuration By keypad
Communication options RS232 / USB[1]
Sensor excitation 1 switched battery
Power 1 9 V 6LR61 (PP3) alkaline
Battery life (dependent on usage) ~ 5,000 readings
Enclosure rating IP54
Temperature range 0 to +40° C
Display 2 line x 16 character/td>
Size 4.9" x 3.1" x 1.7" (125 x 80 x 45 mm)
Typical applications Instantaneous reading of soil moisture / profiles/ WET Sensor
[1] With USB to RS232 Adapter Cable type USB-RS232
ML3 ✓ without temp
SM150T ✓ without temp
PR2 SDI-12
WET Sensor
EQ3 ✓(mV only)
Temperature -
Tensiometers -
Counters or Events -
Relay Output -