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WaterScout SM 100 Soil Moisture Sensor

Updated:2025-03-13

Brand: Spectrum
Model: WaterScout SM 100
Description: 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-wat
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Product Details

WaterScout SM 100 Soil Moisture Sensor Description：

Product Manual

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.

Specifications

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)