Controller Link
Controller Link is a simple upgrade for existing sprinkler timers to provide climate controlled irrigation. Controller Link saves water by managing irrigation, based on real-time weather conditions.

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Why Weather Reach?

Who Benefits from Weather Reach?

Success Stories


Competitive Advantages

Trust your landscape to those who follow three keys to effective smart control:

ET (evaporation)

Precision ET Weather Stations measure 5 climate conditions to manage irrigation.
  • Solar Energy
  • Wind
  • Humidity
  • Temperature
  • Rain
To cut cost and compromise quality competitors will take one of two approaches.
  • Eliminate sensors
  • Use cheap sensors
When sensors are eliminated less accurate formulas are used to estimate the missing condition.  The result is either over or underestimating ET.  For example:
  • On a cloudy day humidity goes up and plants don’t use as much water.  When the solar and humidity sensor is eliminated a “smart” controller will overwater and waste money.
  • On a dry windy day landscapes dry out much faster.  If the wind sensor and humidity sensor are not used a “smart” controller will underwater and stress the landscape.
GIGO is an old expression; garbage in garbage out.  Low cost sensors are not as accurate and reliable. Climate sensors need to be well maintained and properly sited.
The other mistake made with low-cost systems is the location of the sensor.  Air temperature is influenced by its surroundings, latent heat from a roof, building or pavement will over estimate ET.
Weather Reach is built on the principle that weather affecting evaporation is regional and it is better to use one high-quality weather station that can be well maintained.  Hourly weather conditions reach control equipment to make real-time decisions.  The Weather Reach Signal and Weather Reach Web enable thousands of smart control devices to share weather data from a high-quality ET Weather Station.
Learn more about ET and ET Weather Stations


Don't water in the rain!  That makes sense.  So use a rain sensor, right?  Wrong.  Rain shut-off devices just stop watering when it is raining and allow watering to resume too soon after a rain storm is over. After a heavy storm landscapes may not need to be watered for several days.
The problem is cheap rain sensors just sense rain.  Most rain sensors trigger at ¼” of an inch and allow watering in a light rain storm. 
The other issue is reliability.  How many rain sensor have you seen mounted to a roof with the wires disconnected from the controller?
By measuring rain smart controllers can be smarter.  Weather Reach Smart Control uses rainfall measurements to water right.  A light rain storm may delay watering a day and a heavy storm will prevent watering until the rain has evaporated.
Advanced Effective Rain science is used in Weather Reach Smart Control.  Not only is rainfall measured but the amount of water that is useful to the plants is determined.  Effective Rain science optimizes the value of rain to a landscape.
Learn more about Rain Source options and Effective Rain Management.

Water Management

“Deep, less frequent watering” has been the message from horticulturists for years - sounds simple.  But how deep?  And how often?
Just because a smart controller uses ET and rain to manage watering schedules, doesn’t mean it implements deep, less frequent watering.  In fact most “smart” controllers do not manage frequency, they just change how long a valve waters, ignoring the need to water deep and less often.
ET-based water management can generally be divided into to methods: 
  1. Replenishment – Uses a fixed watering schedule; typically daily and changing the zone run time to apply enough water to replace the water that was lost because of evaporation.
  2. Allowed Depletion – Deep, less frequent.  The replenishment model is based on a 2) Allowed depletion is based on the concept that plants are healthier when the soil dries out to an allowed level before watering again.  This approach maintains a proper balance of air and water in the root zone.
The replenishment model is the simplest to implement and on the surface makes sense.  But look deeper, the replenishment model promotes shallow roots.  In the spring and fall roots get watered too often and do not grow deep to be prepared for the heat of the summers.
Some smart control systems claim to use the Allowed Depletion method, but they often only use ET to decide how often to water.  Rain and ET must both be part of the equation.
Weather Reach Water Management was the first and remains the only smart control product that maintains the moisture balance in real-time.  Once soil moisture has been depleted it is time to water.  Plus, the look-ahead feature looks to see if there is time when watering needs to off and if needed will water early.
Learn more about Weather Reach Water Management