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waterscout sm 100
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  • waterscout sm 100
  • sm100 zoom
  • greenhouse with reader
  • irrigation station
  • specware chart
  • multiple depths
  • field with reader
  • waterscout sm 100


WaterScout SM 100 Soil Moisture Sensor

Place at multiple depths to help determine both when and how much to water https://youtu.be/ZXpeI7ukEW8 Read More

Quantity Item Name Item Number Price
WaterScout SM 100 Sensor 6 Ft 6460 $95.00
WaterScout SM 100 Sensor 20 Ft 6460-20 $105.00
Product Features

WaterScout SM 100 Soil Moisture Sensors

The key is knowing both when and how much to water!

Maintaining a healthy soil moisture and water balance is essential for producing high quality plants. Under-watered plants suffer from nutrient deficiencies, stunting and wilting. Conversely, over-watered plants are more susceptible to disease pressure and less tolerant of dry conditions later on in their life cycle. Extreme over-watering will suffocate the plant and lead to root death.

  • Measures Volumetric Water Content (VWC) of soil
  • Capacitance-type sensor responds immediately to changes in soil moisture content for better irrigation decisions
  • Calibrated for mineral soils or soilless media
  • Installs easily into 3/4 in (1.9 cm) hole
  • Install permanently or use to take spot measurements
  • Can be read with the FieldScout® Soil Sensor Reader (Item 6466) or WatchDog® 2000 and 1000 Series Stations
  • Connect up to 8 sensors to one station Not compatible with 400/200 loggers. WatchDog Stations sold prior to 2009 must be upgraded. (call for support)


See our Soil Moisture Sensors in action in this video from AgWeb.com - Click here for the video.
The product feature begins at 13:30 of the video. In episode 12 of Corn College TV season 2, head to the field with Farm Journal Associate Field Agronomist Missy Bauer. She shows how her crew is using a technology from Spectrum Technologies to monitor irrigation efficiency.


Standard Interface: WatchDog weather station, FieldScout soil moisture reader

Range: 0% VWC to saturation

Power Requirements: 3 to 5V @ 6 to 10 mA

Output: Analog voltage 0.5 - 1.5V for a 3V excitation (ratiometric for other excitation voltages)

Resolution: 0.1% VWC

Cable Length: 6 ft (1.8 m) and 20 ft (6 m) standard, extendable up to 50 ft (15 m)

Accuracy: 3% VWC @ EC < 8 mS/cm

Sensing Area: 2.4 in (6 cm) x 0.8 in (2 cm)

Manuals / Literature

Find all of our Product Manuals and literature in our Documents Library




How to Install the WaterScout SM 100 Soil Moisture Sensor


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