A3 Plus Soil Moisture Sensor (Indoor/Wifi)


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Monitor the soil moisture, air, and light conditions in your greenhouse from anywhere, anytime. Perfect for irrigation management, EarthScout A3 Plus Soil Moisture Sensor with IOT smart farming technology uses your Wifi to send hourly soil moisture readings to the EarthScout app on your phone. "Plus" means it can run up to 6 environmental probes at a time to monitor soil moisture, soil temperature, Soil EC, air temperature, humidity, oxygen, CO2, and PAR light - helping you maintain the ideal amount of water, nutrients, and light for your crops. It's easy to use and install. For irrigation set your high and low soil moisture limits (e.g. 19% and 14%) in the EarthScout app and it notifies you when soil moisture hits your limits, then adjust irrigation accordingly. A3 Plus Soil Moisture Sensor quickly pays for itself, saving growers an average of 25-50% on irrigation costs, while reducing management time and improving crop quality. Qualifies for most state and federal water conservation rebates. Compare EarthScout Products.

A3 Plus Soil Moisture Sensor for $1,675 includes:

  • 4 plug & play sensor ports (run up to 6 sensors - see Features & Benefits)
  • Battery and Tripod Stand
  • 1 TDR Soil Moisture Sensor (plug-in to monitor soil moisture, temp, & EC)
  • 1 Air Temperature & Humidity Sensor (built-in)
  • 120V AC Adapter (plug-in to provide power and charge battery)
  • EarthScout App with Irrigation Management
  • 1 End-Of-Season Agronomic Report (FREE: $129 value)
  • Wifi Plan: $1.99/month (1st year FREE)
  • 5-STAR Installation & Technical Support (Priceless)

Configure Your Product:

  • Wifi Plan *

  • Add Sensors (Optional): *

    TDR Soil Moisture Sensor +

    Plug-in a second research grade TDR Soil Moisture Sensor to your EarthScout to monitor soil moisture, soil temperature and soil electroconductivity at 2 depths. Up to 4 soil TDR sensors can be used at one time. Contact us for additional TDR Soil Moisture Sensors.

    $451.00 each   |  


    PAR Light Sensor with Telescopic Pole

    Plug-in a PAR Light Sensor to monitor PAR light above the crop canopy. Includes telescopic pole.

    $933.00 each   |  


    Oxygen Sensor

    Plug-in an Oxygen Sensor to monitor soil oxygen or air oxygen levels.

    $840.00 each   |  


    Air CO2 Sensor

    Built into your EarthScout at the factory, add this sensor to monitor Air CO2.

    $342.00 each   |  


  • Add Accessories (Optional): *

    Quick Install Burial Tube (Outdoor/Indoor)

    Once installed in the soil, use the Burial Tube to quickly insert one or more TDR Soil Moisture Sensors into the soil at various depths without digging another hole.

    $80.00 each   |  


    Extra Battery (L3, A3, & WeatherScout)

    Compatible with L-Series, A-Series, and WeatherScout.

    $27.00 each   |  


  • Extend Warranty (Optional): *

    3-Year Extended Limited Warranty

    Extend your 1-year limited warranty to 3-years.

    $199.00 each   |  



Standard production time is 4-6 weeks for all EarthScout units and will be shipped via FedEx Ground. For expedited production or shipping options, please contact our sales team at 877-443-7632.