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The Chameleon Card System measures soil water. Touch the two sensor wires on the card and the LED lights up. The light will turn blue (wet), green (moist) or red (dry) to show the soil water status.

Sensors can be installed at a single depth in several locations. Install a sensor in the middle of the root zone. Alternatively, sensors can be installed at different depths in the same hole.


  • Allows you to see the progression of roots down into the soil through the growing season, as the colours turn from blue to green to red.
  • Multiple depths also let you to see how deeply the water has penetrated after irrigation.
Waterwise Products Program