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    Phone: (949) 540-0645


    Rockrose Technology
    15530-C Rockfield
    Irvine, CA 92618 USA
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Consumer FAQ

I can't find where my common wire and 24 VAC wires on my timer.

It is recommended the user contact that controller manufacturer to ask where the common wire and 24 VAC wires are located.

I can't figure out how to connect the WaterDex wires

- Please visit www.waterdex.com and download installation instructions. Also, please watch the installation how to video for further tips on how to correctly install the WaterDex. Four wires from WaterDex receiver are connected to your timer. Most irrigation timers have screw terminals that allow you to easily connect the WaterDex wires.

Why do sprinklers keep coming on and off when they didn’t do that before I installed WaterDex?

- When the WaterDex is correctly installed, it will cause the sprinklers to reduce the watering cycle. The sprinkler (zone) will pulse on and off depending on the percentage set on the WaterDex dial. These pulses are called mini soak cycles and help reduce runoff while allowing the water to penetrate the root zone allowing for a healthier landscape.

What size and type of battery should I use for my irrigation timer?

- Most timers use standard 9 volt batteries. It is recommended that you contact your irrigation controller manufacturer to ask what type of battery is appropriate

Why should I replace the battery in the controller?

-Replacing the battery prior to installing the WaterDex ensures the existing timer settings are saved in the irrigation timer

What size batteries do I need for my WaterDex remote? How many?

-AA Batteries (2)

How far away can the WaterDex remote be away from my receiver?

-The WaterDex remote will communicate from a variety of distances with the receiver (connected to the timer) depending on a variety of circumstances. To test if the WaterDex is working, please visit, the www.waterdex.com and watch the troubleshooting video. Also, if you turn the dial and the green light flashes your receiver and transmitter are communication properly.

What if I have more than one controller, do I need more than one WaterDex?

-Yes, WaterDex will only communicate with the irrigation controller that has the WaterDex receiver and transmitter properly connected and paired.

What happens if my timer is installed outside?

- The WaterDex receiver is not suitable for outdoor use. It is recommended that the irrigation controller (timer) be installed indoors. If this is not possible, it is recommended that the WaterDex receiver be installed inside of a weatherproof enclosure.

What do the numbers 0, 10, …100 on my dial mean?

-The numbers on the WaterDex represent a percentage of budget. When you turn the dial to a number on the WaterDex remote control dial, that number represents the percentage of watering time that the irrigation controller will operate. For example, if the irrigation controller is set to irrigate 10 minutes and the WaterDex remote control dial is set to 100%, the irrigation controller will operate for 10 minutes. If the WaterDex remote control dial is set to 50%, the total watering cycle will be for 5 minutes.

Can I install to my WaterDex?

- Yes! It is recommended that you user read the installation instructions and watch the installation video posted at www.waterdex.com to learn how easy the installation is.

What is a watering index?

-The Watering Index is a number that is scientifically calculated. It is based on weather conditions – temperature, relative humidity, and other factors and can be used as a guide to control irrigation watering schedules.

How is the watering index used?

- The WaterDex is adjusted to the current watering index value to modify your timer watering cycle. It does this by controlling the watering run times for all electric valves managed by your controller. With WaterDex, your watering times are increased or decreased with just one turn of the dial. The adjustment is effectively a percentage of the maximum watering time allowed by the timer for each watering zone.

What is the benefit of having a WaterDex?

The index is normally 100% for much of July and August. Over the course of the year the index changes to reflect the landscape’s changing need for water as climatic conditions change. As new Watering Index values are published weekly, the WaterDex remote control should be changed to match the current index value. Note: the Watering Index does not specify that watering times should be increased or decreased by a specified number of minutes per electric valve. Instead, it simply specifies a value that the WaterDex remote dial feature should be set at. The watering times will automatically change when the percentage adjust setting is changed.

What is the scientific basis for the Watering Index?

The Watering Index is based on ET data (evapotranspiration) that measures the loss of water evaporated from the soil and transpired by plants. ET is calculated from specialized weather stations that measure such information as solar radiation, air temperature, relative humidity and wind velocity. ET values are primarily dependent on the amount of solar radiation. A watering schedule should be designed to periodically replace the amount of water lost via ET. The Watering Index compares the average ET data for the most recent week with the highest average weekly ET value recorded over the last 10 years. The historical high occurs in July and equals 100% on the Watering Index. The graph below shows a typical ET curve and the step-curve created from Watering Index values calculated over a twelve-month period. The third curve shows the water used when the irrigation schedule is adjusted just twice a year – a common approach for many people.

Where does the ET data that is used to calculate the Watering Index come from?

-Both the historical and actual ET data is collected from weather stations located across the United States. Add link to picture of US map provided in service area.

How do I find my specific WaterDex number?

- Go to www.waterdex.com to subscribe for zip code specific weekly Watering Index numbers

What if my controller is set at the suggested Watering Index value and my plants looked stressed?

Realize the Watering Index value is only an educated guide – a helpful tool. It is not an absolute command that is always right for all situations. The index coaches you when adjustments should be made and how large those adjustments might be, but you have to be pro-active by paying attention to the health of your landscape. If your plants look stressed after setting your percentage on the remote control WaterDex Dial, then make a practical adjustment from there (Common signs of plant stress are droopy leaves, or a grayish blue tinge to your grass, or grass that stays flat after being stepped on). If signs of stress remain, increase the setting on the WaterDex remote control dial feature up accordingly. Make these periodic adjustments until the landscape appears healthy.

Could the Watering Index ever be greater than 100 percent? My WaterDex doesn’t go to a value greater than 100 so what should I do?

Yes. If the year is hotter than the 10-year average, or if there are exceptionally hot and dry periods (during high winds), the Watering Index may exceed 100%. Set the WaterDex Dial to 100% and increase the run times on the irrigation timer.

Is it a good idea to adjust my irrigation controller to a specific setting before installing the WaterDex?

- The irrigation controller should be set to the highest watering requirement settings. July is typically the highest water requirement month. For example, set your controller to what it would be set to in July. Consult your local water district for recommended settings.

Is there anything else I can do to improve my watering practices and reduce my use of water?

Yes! In addition to having a good watering schedule and adjusting it as the Watering Index would suggest, it is important to periodically (at least monthly) turn on each irrigation valve to see how it is working. Look for sprinklers that are not popping up properly, shrubbery or grass that is interfering with the watering pattern of a sprinkler, broken nozzles, clogged nozzles, sprinklers that do not pop up vertically, sprinklers that are spraying sidewalks and driveways, etc. If your water pressure is high, use pressure regulation devices to bring the sprinkler operating pressure down to the optimal pressure range specified by the manufacturer. Pressure that is too high causes the water exiting the sprinkler to turn to mist. Water in the early morning hours. Water when the air is still. Do not water in the afternoon, or much of your water will be lost to evaporation. Also, it is very important to look for runoff, especially if you have sloping landscape and clay soil. If runoff occurs before the appropriate watering time is completed, break the watering time into increments that do not exceed the time it takes before runoff appears. Then, reprogram the controller to run this station (the electric valve) however many times is necessary at the shorter run times to apply sufficient water, allowing enough time between run times to permit the water to soak into the soil. Avoiding runoff not only reduces your water use and improves the appearance of your landscape, but, equally important, it avoids runoff that carries pollutants into the sewer system.

Where will I find the latest Watering Index?

Visit www.waterdex.com to subscribe for daily settings and for subscription options.

What if I don't have a sprinkler timer/ controller?

- WaterDex only works with automatic irrigation controllers. If you don’t have one it may be a good idea to install one.

What is the receiver for?

-The receiver receives a signal from the transmitter (remote control).

What is the transmitter for?

-The transmitter transmits a signal to the receiver.

What happens I lose or damage my remote control dial?

- The remote control is made specifically for each transmitter. You will need to purchase a new WaterDex.

Why is my lawn brown?

-If your lawn is browning it may be for a variety of different reasons. Your lawn may need nutrients or additional water. Consult a professional contractor to provide a specific recommendation for your lawn.

How do I know the WaterDex is working?

- When the remote control WaterDex dial is an adjusted the green LED will flash. If this does not happen, go to www.waterdex.com and watch the troubleshooting video to correctly pair and test your WaterDex unit.

How do I know I'm saving water?

-The easiest way to know if your saving water is to review your water bill. Contact your water district for previous months billing.

Do I have to follow the recommended watering index?

-No. However, our zip code specific recommended watering index is a great management tool that is scientifically proven to reduce consumption if correctly administered.

What should I turn the dial to when I'm out town?

- The dial will remain at its last setting when you are out of town. It’s up to you and will depend on the climate you live in.

Is this is smart timer

-No. WaterDex is a retrofit device that makes your irrigation timer smart.

What is an ET controller?

- An ET controller is a controller that responds to Evapotranspiration.

Is WaterDex eligible for rebates?

-Contact your local water agency to find out. Rebates vary nationwide.

Does WaterDex have a warranty?

-Yes. WaterDex has a limited 1 year warranty. Contact Rockrose LLC for specific concerns or questions. See contact information on www.waterdex.com.

What is the difference between a timer and controller?

-Nothing. Timer and Controller are interchangeable words for the device automatically operating your irrigation system.

What if I have drip irrigation?

-No problem. WaterDex retrofits to the irrigation controller and does not discriminate based on sprinkler type. It is recommended that the irrigation controller be set to adequately accommodate for drip irrigation.

What is an irrigation valve?

-Irrigation valves are usually globe valves that utilize a diaphragm and an electric solenoid to open and close the valve, which allows water to exit the sprinkler.

How do I program my controller?

- Contact to local water agency for details.

Will this work with my hose timer

- WaterDex will only work with an automated irrigation controller.

Can my gardner install WaterDex?

-Yes. Have the installer review the irrigation instructions and installation video found at www.waterdex.com

What if I have multiple valves?

–No problem. WaterDex retrofits to the irrigation controller and does not discriminate based on number of valves. It is recommended that the irrigation controller be set to adequately accommodate for multiple valves.

Will WaterDex work with my current irrigation timer?

- Yes, WaterDex is a retrofit product and will work with every automatic irrigation timer on the market.

How do I know if my irrigation timer is adjusted properly?

- Contact your local water agency with questions specific to recommended settings for your irrigation timer.

Do I need to have different times for each of my watering zones? Why?

- No. However, it is a good idea to have different total run times based on the plant material in each valve watering area. ie. Flowers and Shrubs should be in 2 different valve-watering areas due to different watering requirements. It’s also a good idea to have multiple start times to reduce over saturation and runoff.