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Rachio

Rachio 3 Smart Sprinkler In-Ground WiFi Irrigation Controller, 4-Zone

Based on 750 reviews
Condition: Used - Acceptable
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$149.00
Save $50.00 was $199.00

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At a glance

Condition
Used - Acceptable
Size
4 Zone (3rd Generation)
Style
04 Zone Controller
Model
4ZULW-C
Dimensions
9.1"L x 1.4"W x 5.6"H
Weight
16 oz
Color
White
In the box
Controllerpower supplyquick start guidescrews and drywall anchors
Warranty
2 Year Limited Warranty. Not for use outside the United States and Canada. Unauthorized use outside of these countries will void all warranties.

Features 5

  • SMART SPRINKLER CONTROLLER - Rachio invented the smart sprinkler category and continues to be the most trusted controller on the market. Only Rachio offers smart schedules that include plant type, soil type, sun exposure, and more.
  • WORRY-FREE WATERING - Rachio tailors your watering schedule to the specific needs of your yard and plants, providing the right amount of water no matter the landscape. Ensure a beautiful yard and lower your water bill at the same time.
  • NO MONTHLY FEES - Rachio comes complete and ready to use, without any extra charges or app subscription fees.
  • EXCLUSIVE WEATHER TECHNOLOGY - Patented Weather Intelligence automatically skips unnecessary watering with features like rain skip, wind skip, freeze skip, and more.

Specs 18

Color White
Brand Rachio
Voltage 120 V AC
Product Dimensions 9.1"L x 1.4"W x 5.6"H
Material Plastic
Brand Name Rachio
Item Highlight 4 Zones, App Control, Rain Skips, Local Weather Scheduling, DIY Install, Smart Home Ready, 2-Year Warranty
UPC 850028614433

Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

Awesome, simple and smart
Size: 8 Zone (3rd Generation) Style: 08 Zone Controller
This works great!!! Extremely simple setup and app is very easy to learn/use. Since it connects to the internet for weather updates, it has cancelled two watering due to rain, saving me money!! Wish I had it sooner!
Reviewed in the United States on January 20, 2026 by Matt
Absolutely a must buy for care-free sprinkler management!
Size: 8 Zone (3rd Generation) Style: 08 Zone Controller
This irrigation controller is perfect for homeowners who have 8 or less zones to their irrigation system. If you have basic level knowledge of tools and how to do simple home improvement tasks, installation is very easy. A perfect replacement for old school controllers (like my old Rainbird model with a dial and simple numerical screen) that were annoyingly complex to try to control schedules, do seasonal or rain adjustments, or just manage in general. These are often on sale during big Amazon sales events, so I picked it up for quite a discount during Black Friday / Cyber Monday sales. - Installation consisted of unplugging the old Rainbird controller, carefully labeling each zone (1, 2, 3, etc.) and the common wire as it was installed before, disconnecting all labeled wires, and then removing the old controller from the wall. New install was pretty much the reverse. Took approximately 30 min at a leisurely pace. - Initial Setup: Super easy via the app and only need to setup a Raachio account, and of course needed my WiFi password to connect the controller to the network. - The app: Very intuitive and easy to use. I love that I can take a picture for each zone so I know what is what. I can use the app to quick run each zone while I'm walking around to inspect sprinkler heads and make adjustments. No more running back and forth to the controller on the wall. Schedule setup was very easy and it is easy to have multiple schedules with any combination of zones assigned to each schedule. For example, I have one schedule to run my yard zones, and a separate one for my raised garden beds using drip lines. The system uses local weather reporting to perform "rain skips" based on predicted or actual precipitation. The rain skip is really the only drawback I have found so far. When summer temps are really high (95+ deg) it is not uncommon where I live to have inaccurate rain predictions due to small thunderstorm cells that may rain close by but not at my location. Sometimes the system will rain skip a schedule based on the weather prediction, but in reality no rain was received. I end up having to manually un-skip the rain skip occasionally. However this is only a minor issue and still miles ahead overall compared to the old outdated controllers. This also could be a function of the type of schedule I set up; there is a much higher level of customization available than I have fully utilized. ... show more
Reviewed in the United States on July 22, 2024 by Evan Day
Excellent product, but not for everyone
Size: 8 Zone (3rd Generation) Style: 08 Zone Controller
I debated for a long time before purchasing this product due to the mix of very strong reviews — both positive and negative. After using this unit for about 2 weeks, and experiencing a lot of weather in the North TX area, I’m writing to speak to both sides and offer my observations in hopes that it will help others who find themselves in the same dilemma that I did. First, let me say that this is an awesome product. Having worked in technology, and specifically software engineering and product development for 15-20 years, I truly appreciate the simplicity of the product. The entire setup process — from opening the box to having water running in our yard — lasted maybe 10-15 minutes max, and it was only that high because I spent about 5 minutes creating a label on our label maker to “mark” the zones on the outside of the unit. Some might call this overkill… my wife calls it particular… but nevertheless. Everything from the design, to engineering, to the magnetic cover, the software in the app (we use iOS)… it was simple and the experience was like opening an Apple product and having it “just work”. Second, let me speak to the setup options, since I think this is where most folks that write negative reviews get hung up. There are basically two paths to choose from, and there doesn’t really seem to be a middle ground. One path is to basically set it up as a “dumb controller” — meaning, think of what your parents probably had 20-30 years ago in their garage. You set a schedule, it is fixed, and it basically runs on certain days and times that you set. If this is your preference, then save your money and buy a different controller. There are way cheaper options on the market, and this product is going to be overkill for a schedule that simple. The other option, which is why I suspect most of you are probably interested or reading this in the first place, is what this system is really designed to do. You can set it up as a “smart controller” — meaning, you set a base schedule, along with some data points specific to your location, and these are fed into an algorithm, along with real-time weather information from your area, and it basically adjusts “on demand”. For example, if it rained more than a certain amount (you can set the threshold), or if rain is even expected in your area in the next 24 hours, it will skip a cycle. Or if it detects winds (again, you can set a threshold), it might adjust the time. Same thing for temperature below freezing, soil moisture, etc. There are a lot of options and you can customize which ones per zone… for example, one of our zones is a dedicated drip hose, so the wind alert doesn’t really matter but the soil moisture does. The neat thing is you can set multiple “schedules” and target different settings for each. The only thing to be aware of, is one of the settings is “time of day”… so if you have multiple schedules for the same day, and they are both set to “finish before sunrise”, for example, you might run into weird situations. We get around this by alternating days (or you can set a “fixed” time of day for one). Just a heads up for anyone running more complex schedules across zones. The “smart controller” setup (as I call it) is a little more work up front, and if you do it wrong, I can totally see how it will mess up your yard. However, it’s not all that difficult, and once it’s setup as intended, it’s totally worth the money. Based on our water usage, and the unpredictability of weather in the North TX area, I think this unit will pay for itself in a matter of a couple months. In the past 14 days alone, it has already saved us from running 4 different cycles for who knows how many hundreds of gallons each time. Again, this means that you actually have to do some work up front to make sure it is setup correctly. It does require a little bit of knowledge of your soil type and the ability not to over-estimate slopes. For example, just because your yard is graded (to get water away from your house) does not mean that the slope is “extreme”. All of the factors go into the algorithm… so if you get it wrong, that is not Rachio’s fault, even though it sounds like that is where most of the negative reviews stem from. It’s just like anything else with data… garbage in = garbage out. If you put good data in, then the results can be remarkable. The only downside, if there was one, is I could not get this to work with our existing rain sensor or HomeKit. The rain sensor threw false positives, and once I figured that out (thanks to Rachio alerting us "why" the system did not run), I just unplugged it and it's one less thing to have to worry about. For HomeKit, with a background in software engineering, I’ve looked into this technically and this appears to be an issue with Apple’s integration rather than Rachio. Practically, all this means is I cannot say “Hey Siri, turn on our sprinklers for 10 minutes". Would that be impressive to show off? Absolutely. But with the intelligence already built into Rachio's software, there’s a good chance I’ll never need to do anything manually ever again. In summary… this is an excellent product, but it is not for everyone. I do wish there was a review like this a few weeks back so I did not have to spend time second guessing myself before we purchased this product. All in all, this is a solid product, and I would highly recommend it… as long as you have some time to set it up correctly. I hope this helps! Justin ... show more
Reviewed in the United States on May 4, 2021 by Justin
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