A3 Plus Wifi Soil Moisture Sensor with Irrigation App


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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 with IOT smart farming technology uses Wifi to send hourly soil moisture readings to the EarthScout app on your phone or laptop. Run up to 6 environmental probes at a time to monitor soil moisture, temperature, EC, air temperature, humidity, oxygen, CO2, and PAR light - and maintain the ideal amount of water, nutrients, and light for your crops. TDR Soil Moisture Sensors are easy to install, accurate, and don’t disturb the soil. For irrigation, set your low and high soil moisture range in the EarthScout App (e.g. 9.5% - 16%) and the app will display the real-time soil moisture percent, the inches of water needed to reach 16% moisture, and the dry down distance to 9.5%. A3 Plus Soil Moisture Sensor helps you reduce irrigation costs, and qualifies for most state and federal water conservation rebates. Compare EarthScout Products.

A3 Plus Wifi Soil Moisture Sensor includes:

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

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

    Once installed in the soil, quickly install or remove TDR Soil Moisture Sensors at various depths without digging another hole.

    $80.00 each   |  


    Extra Battery

    4 Volt battery for use in EarthScout L3, A3 and WeatherScout 1 products.

    $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.