ET System

Advanced ET Weather Control For Pro-C family controllers
Sensor ET
Year Discontinued 2022
Product Line
Discontinued Models


ET System
ET System
ET System
User installed options

Contact your local distributor for product availability and ordering.



  • Power input: 24 VAC, 50/60 Hz (from host controller)
  • Current draw: 20 mA, maximum
  • Max distance Controller to ET Module: 6'
  • Max. distance, ET Sensor to module: 100'
  • Sensor wire: Includes 100' of 20 AWG UL approved wire


The Hunter ET System is an easy-to-add accessory for Pro-C and PCC controllers. Using highly advanced technology, the Hunter ET System measures key climatic conditions to calculate local evapotranspiration (ET) factors. ET is a measurement of the water lost from the soil surface by evaporation and the moisture lost from the plants by transpiration. The ET System will calculate irrigation schedules to replenish only the water that is actually needed for plant and soil conditions. The Hunter WiltGard™ technology can intervene to trigger protective watering when extreme conditions threaten vegetation. The result is a dramatic savings in water, healthier root zones, and longer plant life.

Key Benefits

Calculates evapotranspiration (ET) for individual microclimate to fit the exact landscape requirements
Specific irrigation scheduling for every zone based on the characteristics of each
Enables compliance with local watering restrictions
Easily upgrades Hunter PCC and Pro-C to weather-based controllers
Non-volatile memory
Full range of scheduling options
Includes 100 ft. of 20 AWG, 2-conductor for sensor installation
WiltGard™ technology triggers protective watering when extreme conditions threaten plants
Warranty period: 2 years


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CAD Installation Details


CAD Installation Details