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Irritrol RAIN DIAL 6 Station Indoor/Outdoor Controller | RD600-EXT-R

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Irritrol RD600-EXT-R Rain Dial 6 Station Outdoor Remote-Ready Timer

  • Irritrol RAIN DIAL Indoor/Outdoor Controller
  • 6 Station (Fixed)
  • Standard Controller

Features & Benefits

In addition to the numerous upgrades built into this popular, long-standing controller, the optional CLIMATE LOGIC Wireless Weather Sensing System makes the Rain Dial-R a "smart" controller on the cutting edge of water management. When governed by Climate Logic, the Rain Dial-R will automatically water more on warm or hot days and less on cooler days. Applying the right amount of water to maintain a healthy landscape, the Rain Dial-R and weather-based Climate Logic Weather System seriously reduce overwatering and its expense.

  • Climate Logic ready. Automatically reschedules Rain Dial-R watering based on the weather
  • Remote CONTROL ready. Compatible with CRR (Contractor Residential Remote) remote series
  • Rain sensor ready. Sensor bypass switch and terminal for sensor hookup
  • Three independent programs. Programming flexibility to meet the needs of a wide variety of plant material on the landscape site
  • Three water day choices- Any day of the week, skip days or odd/even dates - Skip days and odd/even dates have day exclusion option
  • Water Budgeting. For quick changes to the watering duration of all stations on a program at one time or pre-set a change in water budget for each month.
  • 365-day calendar for Odd/Even date watering. Meets the odd/even date watering mandates often used for landscape water reductions
  • Water well recovery (delay between stations). Option of pump circuit ON or OFF during
  • Master Valve/Pump Start circuit Assignable per station. Stations requiring a booster pump can be supplied while other stations can run on street water pressure
  • Test All Stations program. Allows a quick test of all stations from lowest to highest number
  • Clear/erase memory by program. Saves time by quickly erasing only the program desired
  • Program stack or overlap option. Allows three programs/stations on at once or restricts operations to no overlapping station runs

Product Details

  • Station run times: 1-59 minutes in 1-minute increments or 1-5.9 hours in 1-hour (6 minute) increments
  • Start times: 3 per program per day for 9 starts total
  • Watering schedules per program - Any day of the week - Skip days from 1 to 31 days between irrigation days - Odd or even date watering

Control Your Sprinklers with SMRT LOGIC!*

*NOTE: These WiFi connectivity features REQUIRE the use of the SMRT Logic Gateway device & Climate Logic Wireless Weather Sensor System (Both Sold Separately)

SMRT LOGIC is a cloud based hub for landscapes. SMRT Logic® is the connected solution for your outdoor space. When used in conjunction with a Climate Logic® Wireless Weather Sensing System (CL-100-WIRELESS) or CRR Series Mini Remote Receiver, it provides app-based control to the industry-leading lineup of controllers from Irritrol®. Simply plug the SMRT Logic into an available router port for network access and pair devices on the SMRTscape website. Experience up to 3 times the range of traditional Wi-Fi controllers along with added security and convenience features. Access irrigation, lighting, water features and pumps from a single interface through the same controller you have owned for years. All this and an industry-leading 5-year warranty make SMRT Logic the All-Pro solution for everyone.

Irritrol RAIN DIAL 6 Station Indoor/Outdoor Controller
Product Tag:
Best Value
Product Type:
Controller (AC)
Enclosure Type:
Max Station Run Time (HRS):
5 years
Smart Features:
Remote Control Ready
Power Source:
AC Powered
Number of Programs:
Start Times Per Program:
Sensor Compatible:
Rain Sensor Compatible:
Controller (AC)
Enclosure Type:
4.8 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would buy this product again.
Commerical property, we have four of these.
March 19, 2014
Great product
This is the 3rd and 4th Irritrol RD600 we have purchased, so yes I would recommend this product and this company.
Easy ordering and fast shipping.

Thank you
May 31, 2017
over 3 years ago
Still the best
My old one which lasted 14 years was toasted by lightning. Easy to install and program.
June 4, 2015
Excellent product!!
I needed an additional unit, so bought the same model. I ordered on Monday morning and it arrived Thursday morning via FDEX - great service! Will recommend to my friends and commerical associates.
April 26, 2014
Just what the doctor ordered for our sprinkler system!
Delivery was onetime & the unit was as advertised. Very happy about all aspects of the purchase.
November 5, 2015
Very Satisfied
As described. Packaged well for shipping. Fast shipping.
April 27, 2020
2 months ago
Quick install and simple to set up.
The time of day and length of time for watering.
February 1, 2018
over 2 years ago
Everything I thought it would be.
It was ordered to replace another controller that had broke and solved the problem immediately.
May 4, 2014
Replaced an older RD600 model with three station sprinkler system. Excellent instructions made installation and setup straightforward and unit operated perfectly on first try. I would recommend it.
July 31, 2017
over 3 years ago
buying parts
good prices, good service connivance of ordering, free shipping a plus
October 24, 2018
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 94 questions Browse 94 questions and 248 answers
Why did you choose this?
SprinklerWarehouse.com Store
Because it is easy to operate. We are currently using 6 of these units.
David Q on Feb 27, 2019
Replace a no good one
D C on Nov 29, 2018
Because it is easy to operate. We are currently using 6 of these units.
David Q on Feb 27, 2019
As a direct replacement for current controller
P H on Dec 28, 2018
Replace a no good one
D C on Nov 29, 2018
Its a direct replacement
Jim S on Nov 26, 2018
Replaces an existing 10 year old unit
R W on Nov 20, 2018
C P on Nov 15, 2018
I new the product as I am replacing the identical type unit which you had on sale.
Robert C H on Nov 8, 2018
art m on Sep 26, 2018
P D on Aug 21, 2018
Replace broken unit of the same kind.
PeterK on Aug 3, 2018
My gardener recommended it.
S E on Aug 2, 2018
Replacing a broken unit.
Robert M on Jul 12, 2018
had one similar before.
Larry on Jul 5, 2018
Very easy to program!
T E on Jun 13, 2018
My old one started failing after 18 years.
William T on Jun 10, 2018
Originally came with new house. No changes have to be made to install. However this will be 3rd unit in 11 yrs.
R B on May 14, 2018
to replace an old timer
G A on May 10, 2018
Easy to program and check settings. The weatherproof cover locks shut so tenants can't mess with the settings.
ROBERT S on Mar 10, 2018
replacement for current control
B F on Dec 29, 2017
To replace 16 yr old similar model, not working properly. Couldn't turn on manuelly.
G E on Dec 5, 2017
We use them in all our poultry houses....simple and reliable
K P on Oct 27, 2017
replacing older Rain Dial system since controller is not working properly
R I on Oct 26, 2017
C H on Sep 21, 2017
I had this model previously.
William F on Sep 13, 2017
replacing the current same model brand I have but it is 10 years old
T A on Sep 8, 2017
Best prices.
Jim M on Aug 17, 2017
It is the same as the unit we have in our association homes.
C L on Jul 24, 2017
Have three already. Simple to program for my simple mind.
James R R on Jul 23, 2017
Replaces an existing one. Box, wiring, etc fits.
W A on Jul 12, 2017
Replacing previous device
K P on Jul 11, 2017
best timer and very easy to install
don k on Mar 24, 2017
To replace existing one.
Gregory B on Nov 27, 2016
It should be an exact replacement for my old RD-600
Rusty R on Jun 22, 2013
Had the control options I needed.
Roy M on Aug 30, 2012
It was a direct replacement for my defective Irritrol RD600-EXT
kevin s on May 14, 2012
As a direct replacement for current controller
P H on Dec 28, 2018
Its a direct replacement
Jim S on Nov 26, 2018

I just purchased a Rain Dial-R, 6 station controller and cannot locate the web site to download an online User Manual.

Could you please assist ? A copy via e-mail would be much appreciated .

Many thanks in anticipation

David Bell
David B on Feb 5, 2014
BEST ANSWER: Go to Irritrol dot com and click on literature for the rain dial controllers. I was sending you the link but this SW site does not allow links in responses.
clock flashing in timer window, what does it mean?
jim m on Jun 23, 2014
BEST ANSWER: I believe it means that the power was interrupted, being they might have had a power outage. It also could be a low battery indicator for the 9volt backup battery on the backside top of the timer.
MANUAL MODE PROBLEM. Set valve times and press "manual.:
Immediately goes OFF and display blinks. Same condition on all
valves. Otherw2ise the controller is doing its job?
Any suggestions?
Thanks, Willie D.
Willie D. T on Nov 19, 2011
BEST ANSWER: G'day Willie,
I have never used the "Manual" Button, but it seems to me that if you want to manually run a station, select it on the dial then press the "Manual" button and set the time you want it to run with the "Set Programs" switch set to "Run or Manual".
I have always used the "Semi-Auto Start A, B or C" to run for the "Run Time" which I have already programmed into the appropriate stations.
If your question is about programming A, B or C, then slide the "Set Program" switch to the center position and select the stations you want to run under program A with the dial switch and enter their run times with the + or - key. Then set the Shedule Days and then the Start Times accordingly. Do the same for B and C if needed.
If you want to test your programming, slide the "Set Programs" switch to "Run", select A,B or C and press "Semi-Auto Start".
Make sure the Current Day is set as well as the correct time, leave the center switch in "Run", close the lid and you're done. It also would be advisable to install a backup battery so power failures won't wipe out your programming.
this is a brand new not a refurbished?
A shopper on Apr 24, 2016
BEST ANSWER: All the ones I have purchased from SW
have been "new" and at the best price.
I have not found a better price locally or on the internet. mjr
I need to replace my 16 year old Hardie controller(57LEIB24167, class 2 transformer). I have 6 units in my system. Is this a good replacement option? How is the quality? Thanks!
Matt P on Aug 29, 2012
BEST ANSWER: I replaced my Hardie controller with a Irritrol RD600 EXT R (6 station) a year ago and its been working fine. I would recommend. I been having board problems with another Hardie I have and will buy a second Irritrol RD600 EXT R.
is there a special tool to open the station box? I just bought my house and cannot get it open
A shopper on May 8, 2014
BEST ANSWER: Yes, there is a plastic key to release the timer box latch. The key slot is on the right side of the timer box. You insert the key and turn it clockwise to release the spring loaded latch. Contact the manufacturer to get a replacement key.
I have a rain dial RD600 irrigation system. I have 4 stations that have 4 sprinkler heads each. 3 of these stations work just fine when you manually put time on the RD600 controller box. The first station does not want to shut off for some reason. I thought the valve which controls station 1 was stuck in the on position, but after replacing it, I discovered that it still stays on, and you manually have to turn off the valve in station 1 below ground to stop the sprinklers from sprinkling. I think I might have some kind of eletrical problem where it is not shutting the new valve that I installed. Any ideas?
A shopper on Feb 4, 2011
BEST ANSWER: The most common problems from any "Brain Box" to the source is a bad ground or connections. RECHECK ALL YOUR WIRING! When in a moist/cold/hot area I have found that it is the connection itself to the absolute wiring @ the valving in this case due to moisture. The connections here should always be united with a grease cap connection to insulate moisture to the valve wiring connections (THIS IS VERY IMPORTANT!). The next step would be to check the voltage at the wiring when it is suppose to be "off" and is still "on". If the voltage is "off" it may be the solenoid & or a faulty valve diaphram and if voltage is "on" it is almost going to be always the "brain box" as the problem. One station valve only working problem more than likely will lead to the "brain box" as the problem is the automatic cycle, but be sure to check everything from the valve to the "box". Good luck & I have been there before on all my properties.
There is no power to the unit, do you know what the problem is? I bought the station in June 2010
A shopper on Mar 11, 2014
BEST ANSWER: The most obvious possibility for loss of power is that the 2-amp Slow-Blow cartridge fuse has blown. Replacing this fuse might solve the problem, or the fuse might immediately blow again. If the latter happens, disconnect all the controlled valves (they are numbered on the board), replace the fuse still again, then add back the circuit to a valve one at a time. After adding back each valve circuit, exercise the valve by opening it (your owners manual, available online should tell you how) so that the sprinklers it controls run for a while. Do this until exercising the most recently restored valve blows the fuse. Then, replace this valve, and the fuse, and you should be good to go.
I have an RD-600 exterior unit that is 15 yrs old, plugs in to an outside electrical socket, and needs replacing. Will the RD600-EXT-R be an exact replacement ? Will I be able to basically unscrew the old unit and screw this one in its place without modifications ?
Rusty R on Jun 13, 2013
BEST ANSWER: I bought a new RD 600 a yr ago, and it works well as a replacement for me. But you should know. The small cable hookup on the new RD has 20 pin connector slots the old has 16 or 18. Mine connected ok. I contacted the manufacturer (they have an email support) before I bought it and he said if it didnt connect as is, they make an adapter for about $8 that works. I didnt need it but check online at the mfr's homepage before you buy to see if they still have it.

The new RD has timing abilities you dont need so thats why te extra pins.

Also before you buy, replace the battery in the old one, that may be what it needs.
I am replacing my battery every 2 weeks on our unit ...when I notice that the trees are not being watered I check the unit and the time is blinking and when I replace the battery it works but not for very long I also just noticed that only one thing will work either the grass or bushes or trees any help?
Sheri M on May 14, 2012
BEST ANSWER: I had a similar problem with my Irritrol RD600-EXT. I was constantly replacing the battery every few weeks. It was a bad transformer in the unit converting the household 120V AC to the 24V DC needed for the sprinkler valves. I had to replace my controller.

I spoke with Irritrol customer service about the problem and used my own experience as an electronics engineer to help me. The Irritrol customer service representative was very helpful and provided many useful steps to help troubleshoot the problem. They even provided me with the correct diagnosis (it seems like it could be a common problem).

Since the controller should only use the battery as a backup to store the time and settings in case of a power outage, it should almost never be used. When the transformer was not properly converting the voltage, the controller would use some of the battery to help it operate the valves. This would cause the battery to go dead and the voltage level in the controller would drop low enough for the time to reset and blink.

I would call Irritrol customer service and see what they say. You will might end up needing a new controller.
can you set the timer for AM and PM on the same day watering?
Dana p on Apr 21, 2012
BEST ANSWER: Yes you can. Whi;e in the "Set Programs" mode and with the "Station" selected to the zone you wish to water you can set multiple "Start Times" to run for the station duration time set.
How easy is installation ??
A shopper on Jan 17, 2012
BEST ANSWER: Very easy for me as I was replacing an older model of the same control, which was already connected to everything.

On a new installation, the hardest parts are running the wires in conduit and, of course, digging the trenches, but that would be true of any controller.

The box is almost bullet proof and has stood up well to direct sun and heat since 1993.
JAMES G on Jun 5, 2017
BEST ANSWER: I don't know if there is such a thing as a manual to show you how to wire it but it is the simplest thing in the world. The cable that is used to go to the valves is color coded, so each valve (color) is connected to each one of the terminals which are clearly marked from 1 to 6 or 9 depending on your controller . The ground wire is common to all and make sure it is securely fastened to the proper ground terminal. That is it. Good luck.
How does the RD 600 differ from the RD 1200?
Shane C on May 1, 2017
BEST ANSWER: The RD600 is a six zone controller whereas the RD1200 is a 12 zone controller. There is also an RD900 nine zone controller. You can see the features by viewing the user manual. These are 24 volt AC zone valve controllers.
is this an exact replacement for the rd600?
A shopper on Apr 3, 2015
BEST ANSWER: As a professional certified contractor with years of experience I have found RD600 is my favorite residential controller installation for having the best combination of features & user friendly qualities.
The only differences I am aware of is interior & exterior model(s). Then standard and remote models. The standard interior model has the power transformer exterior of the controller housing and should always be mounted in doors or under cover (no moisture). I would assume a remote version has all the same basic features if not more.

Good luck.
RD 600 EXT-R In Arizona the control is shutting off. The control faces the east so it is exposed to the hot sun all day. Do they burn out after 12 years and what do I need to replace if so?
A shopper on Jul 29, 2014
BEST ANSWER: Yes they do tend to roast themselves here in the Arizona Sun. We typically are getting 5-6 years out of the units on our rentals that have direct Sun exposure here in AZ. We typically will replace the whole unit, box, board, clock as we have found just replacing the clock often doesn't fully solve the issues after that much heat and sun.
where do i find a key to open the box ?
A shopper on Jul 20, 2013
BEST ANSWER: You don't need a key to open the cover, you can insert a 1/4" flat blade screwdriver into the key hole and gently turn it in a clockwise rotation while pulling the door outward. The original key has 8 protrusions on it but you only need 1 to lift the lock latch. Once the door is open you can cut off the loop at the end of stem that goes into the lock receiver and it won't ever lock again.
This was with house when we bought it. Most of the time it works fine but sometimes it doesn't turn on. When I check it, it is flashing SEN. I tried turning the switch to bypass and run manually. That does work but why isn't it working on active sometimes?
Ken Hakli
Phoenix, AZ
Ken on Jul 16, 2013
BEST ANSWER: Hi, Richard here. The Irritrol units allow for the use of a rain sensor, do you have one installed on your system? If it is flashing SEN that means the controller is not activating due to the rain sensor having tripped. That is why bypass switch works, it bypasses the rain sensor switch. The controller, when the rain switch is open, will not water any stations. Hope that helps, let me know if you want to discuss further. Regards, Richard.
Will this controller manage 3 valves?
A shopper on Sep 22, 2012
BEST ANSWER: a station is a valve. So since this is a 6 station controller the answer would be YES
locked the bos and do not how to open it, I lost the key. canyou tell mw how to open it. thanks?
Mary b on Oct 30, 2011
you should be able to fit a flat head screwdriver in the lock and turn clockwise to open. It's not a very secure lock, just to keep from easy tampering. Good luck, Joe
How hard it it to install?
Arvid E on Apr 16, 2011
BEST ANSWER: Not hard, although we replaced our old controller which was just an older version of this one. You do have to attach the electrical, but that's not difficult -just make sure it's turned off. The hardest part for me was removing the old controller!
My controller seems to be unresponsive. None of the buttons work, so I can't program it. I tried to reset by removing power (battery too) but it remains unchanged. Should I just buy a new unit?
Vince M on Feb 12, 2011
BEST ANSWER: Make sure the back up battery measures 9 volts.If below 9 volts replace it. When you turn the dial if the images flickers it means the terminals are not making good contact.. If that is the case then the controller will have to be replaced. Also measure the output of the transformer going to the controller . The voltage should be 24 volts.
how do I bypass the rain sensor on my Irritrol system?
A shopper on Jan 10, 2019
BEST ANSWER: Not positive but there should be a switch on the circuit board that you just have to put in the opposite postion.....look for a small black switch you can slide..
What is the meaning of a "FUS" fault code?
B A on Oct 21, 2017
BEST ANSWER: Frank Scaduto

scadutof@hotmail.... This fellow rebuilds these units and should have your answer
What is the reason for 3 different programs? Is there any reason not to just use the A program and put all the stations on that program? I have 12 stations.
Cynthia G on Jul 17, 2017
BEST ANSWER: Having 3 programming options allows you to select a different watering schedule without going through re-programming steps. I have all zones on each program. I use 1 program C solely for the purpose of blowing out lines in the fall as this is a must in MN. I use program A for early in the watering season when we receive plenty of rain (less watering time) and then switch to program B when things start to dry up (increased watering time).
In removing an existing one to install a new one how does the device hook into the1" slip x MPT pvc pipe adaptor? Does it simply lift off or do I need to cut the pvc?
Ken V on May 4, 2017
BEST ANSWER: Typically, which is an operative word, the MPT to slip is NOT glued to the PVC. So, it should be easy to unscrew the retaining ring from the MPT fitting inside the controller shell, and lift it off (out) of the PVC.
If it is glued, then the obvious is to cut the PVC pipe at least two inches below the MPT fitting (to use a coupling to fit it back together). I would suggest -
1. Be very careful cutting the PVC pipe, your wires are in it.
2. Once the wires are disconnected from the controller connections, you should be able to twist them to make all the wires seem as one.
3. Then tape them together with black electricians tape.
4. Find a wire coat hanger and cut about 12-14 inches so you can make a fish hook. Insert the fish hook under the tape and tape it to the wire.
5. Push the coat hanfger wire, with the controller wires attached, down past where you are going to cut. This gives you one target that really means nothing it you nick it.
6. Once most of the cut is done, you should be able to see where the coat hanger is in relation to the cut.
7. Move the coat hanger out of the way and finish your cut.
8. Once completly cutting around, you can remove the PVC pipe enough to figure out how to get everything apart, and back together. Not rocket science.
Best wishes!
my raindial doesn't work do i need to replace it with the same ? its an ext type but its inside
A shopper on Oct 28, 2016
BEST ANSWER: If your system does not work and you have checked the battery, tried several settings and it still doesn't work, then I would say yes. It is a good investment.
i have rd600 and i need a new controller only
do you have
that item for purchase?
A shopper on Feb 27, 2016
BEST ANSWER: Before replacing the controller, I suggest that you remove the Terminal circuit board and check the soldered joints for each of the connectors. In my experience this has been #1 cause of failure.
If joints look like they are cracked, they will need to be re soldered. If you cant do it your self, you should be able to find a friend that could do it for you.
You can get further help from raindialrepair dot net
Good Luck.
I have this unit for last 6 years in my house, But not the wiring is little bit messed up, I have a Voltmeter at home..what should be the voltage on each wire for troubleshooting?
Tom L on May 8, 2014
BEST ANSWER: My first RD600-EXT-R lasted approximately 12 yrs. and then it decided to do its own thing---never used a Voltmeter to check anything---between my landscape person and me we determined it was just old and some of the resistors etc. were not working---I also changed all of the brass valves---thus a new systems!!! That is the best I can do, so I guess if you did use the voltmeter---found different voltage---I am not sure you could do anything about it??? Maybe move the wiring over to one of the unused stations if you have one...
What is the difference between the Irritrol RD600-EXT-R Rain Dial 6 Station Outdoor Remote-Ready Timer and the Irritrol RD600-INT-R - 6 Station Indoor Controller. Is it that the indoor is for indoor only? Are there any other differences? Thanks! Matt
Matt P on May 5, 2014
BEST ANSWER: The only difference I am aware of is that the external is housed in a plastic box that resists water intrusion. Any rain, or irrigation water, getting to the printed circuitry would cause oxidation that pretty soon would put the controller out of commission. Even if the water never caused a short-circuit, the rust would disable the unit in short order.

If you happen to have an outdoor unit, you can certainly install it indoors if you wish, but I wouldn't try it the other way. Even with an outdoor unit, I have had to replace the unit after five years outdoors because of oxidation. I don't mind, because the "set-it-and-forget-it" nature of this controller makes it all worth-while.

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