Model # 16ZULW-B

Internet #206681009

Store SKU #1001642871

Rachio 16 Zone Smart Sprinkler Controller, 2nd Generation


16 Zone Smart Sprinkler Controller, 2nd Generation

  • Easy to control anywhere anytime from your phone tablet or laptop
  • Automatically adapts for weather, optimizing watering schedules.
  • Save water and money. Save up to 50% of your outdoor water use.
$249.99 /each

Frequently Bought Together

Product Overview

Take control of your watering with a Rachio Smart Sprinkler Controller. With the modern irrigation technology of Rachio, you can water with precision using customized, automated schedules that adapt to weather. Manage on mobile, and access more control options with top-tier integrations. Inspire yard envy while saving water and money.

  • Highest-rated, best-selling, the smart watering category leader, overwhelmingly recommended by users
  • Easy to control anywhere, anytime, get complete access to monitor and adjust your sprinkler system from your phone, tablet or laptop
  • Automatically adapts for weather, Rachio continuously adapts to local weather forecasts and changing seasons, automatically optimizing watering schedules
  • Save water and money, save up to 50% of your outdoor water use while keeping your plants healthy, EPA WaterSense certified, eligible for rebate options up to 100% of retail value
  • Water with precision, Rachio uses specific yard details, advanced watering algorithms and proven irrigation science to create accurate schedules customized to the particular needs of your yard
  • Connect with top smart home platforms. Extend your smart home out into the yard. Rachio directly integrates with the best-connected home platforms (Amazon Alexa, Google Assistant, IFTTT, Nest, and more), so you have more options and more control.

  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

Can the device be controlled with an iPhone and/or an apple computer

Asked by: Taxman
Yes, and it works well with iPhone 6 or 7.
Answered by: Waterman
Date published: 2016-11-11

Will this controller allow me to run half of the zones one day and the other half of the zones on another day?

Asked by: sparky
Yes, easily.
Answered by: Sbwk
Date published: 2016-12-03

Is this a z wave device or just wifi? Z wave would be better for me since the wifi router is far away.

Asked by: Del
There's a lot of wrong/bad information here and I think people should not answer questions unless they KNOW the answer. It's misleading, at best, and may propagate far and wide. The Rachio panel does NOT support Z-wave. The Nexia compatibility is due to the fact that Nexia REQUIRES a WiFi bridge. It's the first thing that must be purchased and installed to use Nexia. So, you can use Nexia to control WiFi devices. It's not even accurate to claim that "Nexia is Z-wave only." Also, it is true the Rachio does not support 5GHz WiFi, but it is NOT true that it will not work with a dual-band router. This is absurdity. You don't even had to turn off the 5GHz radio... just ensure your SSID is same on your app and the Rachio. If your router is not properly bridging the 2.4 and 5GHz then that is the problem and it's not uncommon with older or buggy firmware. The AC68U is a perfect example of this and enabling "legacy mode" is a work-around until the firmware is updated. Please stop "helping" by providing information you "think" is correct.
Answered by: Engineer
Date published: 2017-03-24

Does this attach to a weather service to find out the local weather and determine the water needs? Similar to the sky drop.

Asked by: Txgirl6080
It gets weather info from a local weather station. The one I use is at a local small airport about 2 miles away. You can pick any weather station you can find on the net.
Answered by: Python4
Date published: 2016-09-28
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Customer Reviews

16 Zone Smart Sprinkler Controller, 2nd Generation is rated 4.9 out of 5 by 92.
Rated 5 out of 5 by from Incredible Customer Service Had a few issues getting it up and connected to my network but a single call to their customer support identified the root cause was because of a bug in their iOS app (I was running a beta version of iOS) they were able to identify the bug in their app code and get a fix out to the App Store. The CSR on the phone was determined to make sure we got everything up and running and all of my issues were being addressed. Also loved that I could get a rebate from my water company for upgrading to a smart controller - very excited to see how much water I can save by utilizing dynamic scheduling.
Date published: 2016-12-18
Rated 5 out of 5 by from Excellent controller, easy to program and edit when need be. Would highly recommend this for any... Excellent controller, easy to program and edit when need be. Would highly recommend this for any sprinkler. Definitely saves water and money.
Date published: 2017-01-14
Rated 4 out of 5 by from The best--but still not always easy to optimize I've had the opportunity to use several smart sprinkler controllers, and I can confidently say the Rachio controllers have the best software I've used. (I've had no hardware issues with any of them.) Still, there are a lot of technical details that go into setting these systems up correctly, and it's taken me a long time to make good progress on getting it to behave correctly for my landscaping. If you simply want a smartphone or web interface to control your watering system the way you do with you existing non-smart controller, you should find this easy to use. But if your goal is truly to optimize your watering so you don't use excess water or money, be prepared for a bit of a learning curve. Let me talk a little more about why I think Rachio is the best out there: 1) They have extensive online help and FAQs to help guide you through many issues (competitors I have used have much more limited help resources); 2) I have been able to call and talk to a human (in America) when I have needed more extensive help; 3) Rachio gives you access to a lot of "knobs" to help you tweak your watering settings (while competitors I have tried have a 'black box" design that gives you no insight or control into adjusting things beyond the main settings). Now for more details: I changed from a 1st-generation Rachio controller to this one because I outgrew the 8 zones of my first controller, and thus upgraded to this 2nd generation 16-zone controller. Everything was smooth with the initial installation and setup. They've made a few improvements since their 1st generation controller, but the software is basically the same between both, so I see no compelling reason to upgrade if you have enough zones. Two important things worth mentioning about the setup: 1) You need a 2.4 GHz wireless network (most modern Wi-Fi supports both 2.4 GHz and 5 GHz); 2) The Rachio controllers are NOT weatherproof, so if you are going to install this outside, you need a weatherproof box to put it in (which Rachio makes and is available on the website). When I got my first smart controller, I had visions that they would automatically do what I did manually: delay the sprinklers for a while when it rains, and adjust the amount of watering using a percentage "Season Adjust" as the weather changes. While the smart controllers have the rain part down pretty well, they don't just vary a percentage they way I was expecting for season adjust. Now let me get into some programming details. Note that Rachio is continually updating their software, so what I am describing now may change in the future. (It's certainly changed since I reviewed their 1st-generation controller.) When you set up each zone, you have to tell the controller about what you are watering in that zone, and this is where things can get challenging: What type of vegetation (shrubs, annuals, cool season grass, warm season grass, etc.), what type of soil, how much exposure (how much sun vs. shade), what type of nozzle waters this area, and what the slope is. There are also some advanced settings (like root depth). All of this controls how each zone will be watered. From what I can tell, this works very well IF you get all of this right, but getting it right can be a challenge. Do you know if your lawn is cool season grass or warm season grass? Do you know if your soil is Clay Loam, Sandy Loam, or just plain Loam (or yet some other type)? Do you know how many inches per hour your watering nozzles put down? If you don't get these right, very likely your watering won't be right, so you'll either have to do some research or some trial-and-error over time to get things right. In terms of "smart" watering schedules, Rachio currently has two many categories. The first is "Flexible Monthly." I find this the easiest to set up and work with because it is the closest to how a non-smart system works: You still program run times for each zone, and then Rachio alters the schedule every month based on historical weather for your area (how often it waters along with how long it waters). This is easy and it changes with the seasons (and it can skip for rain), but it works on historical weather averages rather than current weather. The problem I have is that often my weather isn't "average." It's not uncommon for weather here to be 10 degrees above average for one week, and then drop to 10 degrees below average the next. So if I set watering times for 10 degrees above average, I'll overwater a lot. But if I set it for "average", then I'll underwater during hot weather. The other "smart" setting is "Flexible Daily," and this works closer to what I want. It monitors current weather on a daily basis to figure out how much water my soil and plants loose every day ("evapotranspiration" is the technical term if you want to research it), and then it waters to replace that. This does a very good job of adjusting for above vs. below average temperatures. The challenge here, however, is this is very dependent on all those settings you input about your plants, soil, and watering system. Something that wasn't intuitive to me about this (although it does have science to back it up) is that this doesn't very run times on a daily basis, but instead varies how often it waters. Initially I had my soil type set to Clay Loam (apparently incorrectly), and as a result it put down a ton of water on my lawn, but only every 5 days in the peak of summer. The result was that my lawn was pretty brown in a few weeks. When I changed this to Loam, it watered less every 3 days, and when I changed it to Sandy Loam, it watered for still less every 2 days. In all of these cases the total water being applied was about the same, it just varied how it distributed it among days. Apparently my soil is actually more like Sandy Loam, as my lawn is looking much healthier now that it is getting watered more often. I've also been tweaking the flow rates on my nozzles and other items. But I haven't yet reached a point where my water bill shows I'm actually using less water than I was when I manually adjusted my controller. So the bottom line is be prepared to spend a lot of time tweaking your landscaping settings to get things optimized to match you actual conditions. One final note about smart devices in general: Most of these devices are totally dependent on the "smart" of the computing power of the company behind it, and are just paper weights if that company ceases to support your product. (I have some "smart" light bulbs that can no longer be controlled because the company who sold them got out of the "smart" business and turned off their controlling software.) So if you want to use your smart devices for years to come, choose a company that you think will still support their product years from now. Rachio is one of the first companies I know of in the smart sprinkler controller business, so I'm personally betting they will be around for a while. But do your own research.
Date published: 2016-10-10
Rated 2 out of 5 by from Indoor rated This unit is rated for indoor installation only. I think they will sell you an outdoor rated housing, but at 250 dollars, it should be outdoor rated to begin with. The power supply is huge and takes up two plugs. Now I don't have a socket to plug in my landscaping lighting. There are a lot of bugs when setting up the app, but at least it seems to be working fine for now. I'm not sure if I'm going to keep it. I don't want to pay extra for an outdoor housing. The water savings are ok, but I rather have my landscape lighting and a different sprinkler controller.
Date published: 2017-04-18
Rated 5 out of 5 by from I replaced a Hunter controller. This controller is so smart I don't have to even think about it ... I replaced a Hunter controller. This controller is so smart I don't have to even think about it anymore. It shuts down the watering if it is too cold and then tells you. It increases the watering time if it is getting warmer based on the soil and amount of water you need to maintain the amount of hydration you need. If I want to water later on, I just ask Alexa (ECHO) to water the zone for "X" amount of time. LOVE IT. I can even manage it from my phone when I am out of town. I am on Mac and iPhone.
Date published: 2017-02-03
Rated 5 out of 5 by from I removed my old unit and installed the gen 2 Rachio eight zone controller in a few minutes. Very... I removed my old unit and installed the gen 2 Rachio eight zone controller in a few minutes. Very easy! Programming my six zones took a few minutes longer than controller installation, but was intuitive and interesting for me. I called Rachio technical support to better understand the programming and found them generous with their time, patient, and knowledgeable. After telling a few friends they thought it was a great gift to buy so their wives could gift it to them!
Date published: 2016-12-10
Rated 5 out of 5 by from The installation and set up was very easy. I was a bit concerned as other reviews suggested the ... The installation and set up was very easy. I was a bit concerned as other reviews suggested the connectors were cheap and did not work well, though I did not have any issue. My previous system had larger gauge wire but fit just fine. Only problem is that the cover "latch" is at the bottom where the wires feed into the unit. With larger wires, it took a bit of work to get them set in so the lid would snap on. Seems like a better solution would be to have the latches on the side, away from anything entering the box. The app (iPhone) was easy to use and set up. I would have been interested to see if the water management system works, but in my area we have restricted watering days so not sure if it will be smart enough to manage that. None the less, if I need to delay on my watering day, it's a simple push of a button.
Date published: 2017-04-11
Rated 5 out of 5 by from Really happy with this purchase. Easy install. Works great. Had to contact support and they were ... Really happy with this purchase. Easy install. Works great. Had to contact support and they were very responsive and helpful. Works with Amazon Echo/Alexa which is cool. Actually works very well with the Echo and responds incredibly fast. I'd highly recommend this product/service. The iOS app has been working great for me. Also awaiting a rebate through my local water company, which helps lessen the cost significantly.
Date published: 2017-04-12
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