Home | Signal Service Map | Contact Us


Call Us:


Our Expert Staff is standing by to answer your questions.


Weather Reach Signal Service


$88 a year.

Irrisoft, Inc offers Weather Reach Signal Service in most areas throughout the US. The cost for service is $88.00 per year.

There are four simple steps to subscribe to Irrisoft Weather Reach Signal Service


Weather Reach Signal Service Brochure

Weather Reach Signal Service for Rain Bird ® ET Manager™

Rain Bird ET Managers depend on the Weather Reach Signal to automatically adjust watering based on real-time climate conditions. Customers save money and landscapes are healthy because they are watered efficiently.

Rain Bird ESP-ET Series
combines the ESP-LX Series controller wit the ET Manager Cartridge. These EPA WaterSense Certified weather-based smart controllers have demonstrated 20% - 50% savings over traditional control systems.

Rain Bird ET Manager Cartridge
easily upgrades the ESP-LXD Controller or ESP_LXME Controller to an ET/Weather-based irrigation smart controller.


[ More ]

ET Manager, Model ETMI
connects to existing sprinkler timer to enable weather-based management.


The ETMi is no longer available, but is still supported


The Weather Reach Signal makes Rain Bird ET Managers weather-smart.

There are four simple steps to subscribe to Irrisoft Weather Reach Signal Service


Is there a cost for the Weather Reach Signal?

  • Irrisoft delivers the Weather Reach Signal Service for $88.00 per year.
  • Commercial providers offer the Signal with a subscription
  • There are some public agencies that provide the signal at no cost
  • Sponsors pay to broadcast the signal from a weather station so there is no cost to end users

Select a weather station on the map to see the terms of service.

What is the return on the investment?

ROI varies according to location and water cost. ET Manager eliminates wasteful over-watering by 20% to 60% assuring plants get the right amount of water. Additionally there is no need to buy, install and maintain a weather station.

I don't see service in my area.

If service is currently not in your area, contact us.

Service can be added to most areas in the US.

Do I need sensors in the ground?

No. Climate conditions cause water to evaporate from the landscape. For decades, weather-based smart irrigation control technology has proven to be accurate, simpler, more reliable and cost effective than soil-moisture systems. On hot, dry windy days plants need more water. On cool, cloudy days plants rarely need to be watered.

What is ET (Evapotranspiration)?

Evapotranspiration, or ET, is a measurement of the water that evaporates into the air from the soil and the amount of water that is used (transpired) by a plant. ET is used to determine how much water must be returned to the landscape either by rainfall or by using your sprinkler system. ET-based smart control has been proven to be a reliable technology for water conservation efforts.

Where does the weather data come from?

To assure accurate, reliable and timely information, the Weather Reach Signal data comes from weather station networks that can provide the five key hourly localized weather parameters; Solar energy, temperature, humidity, wind and rain. The Weather Reach Signal data originates from one of three weather data sources:

  • Campbell Scientific ET Weather Stations.
  • Agricultural weather station networks, including: AgriMet, CIMIS, FAWN, Mesonet, etc
  • NOAA - National Oceanic and Atmospheric Administration - US Department of Commerce.

Why are five hourly weather parameters needed?

Weather Reach Signal delivers five hourly climate measurements from precision instruments to automate irrigation control. Each sensor is essential to accurately determine evaporation and transpiration.

  • Solar Radiation or solar energy is the primary energy source driving both evaporation and transpiration from plants. It is the most important measurement needed to accurately calculate ET. As days get longer, plants user more water.
  • Wind accelerates evaporation. Water evaporates faster on a hot dry windy day.
  • Humidity, the amount of moisture in the air, affects the rate of evaporation. Evaporation slows when humidity is high. Landscapes dry out quickly when humidity is low.
  • Temperature measurements must be coupled with solar radiation, wind humidity measurements to calculate evaporation.
  • Rainfall measurements enable the ET Manager to determine effective rainfall. A light rain storm may delay watering a day and a heavy storm will prevent watering until the rain has evaporated.

Why is real-time weather data important?

It is important to determine the upcoming irrigation based on the latest weather information. Real-time weather data, delivered hourly by the Weather Reach Signal, enables ET Manager to calculate soil moisture loss as it occurs.

How is the wireless Weather Reach Signal transmitted?

The Weather Reach Signal uses commercial wireless 930 MHz paging technology carriers to broadcast weather data. Carrier coverage maps are available here.

Can I sponsor the Weather Signal so there is no end-user subscription?

Weather Reach Signal Sponsors pay to have the Weather Reach Signal broadcast to unlimited users. By sponsoring the signal, ET Managers receive the Weather Reach Signal free; there is no end-user subscription. To become a sponsor call us at 435.755.0400

Can I use my own weather station?

In some cases, yes. Contact us to discuss your specific needs.