Hunter Hydrawise HPC-400 4-16 Station Wi-Fi Controller Web-Based i-Phone Android App 4 Zones Expandable to 16 Zones with Optional Expansion Modules HPC400

The builder installed a Hunter Pro-C controller, which worked fine. However, I wanted something that was more versatile and convenient. Wow. What a nice surprise. Others have described this component well, but the interface on the phone was worth the purchase to me, and I am not a geek that loves technology for technology's sake. Very intuitive set-up. Yes, it is as easy to convert the Pro-C to the HPC as others have said. Programming was easy peasy. Changing programming is so easy it almost seems like cheating. One note: when I first tested the system, my irrigation did not come on. I remembered that I have a master solenoid valve as well as zone valves. It is a simple toggle in the set-up menu and all is well. This system also has many built in weather adjustments you can use and a way to automatically cycle the zones that tend to have runoff to minimize wasted water. Really very capable system.

Easy upgrade from my Pro-C with green buttons and black modules. The setup wizard on the app is a little buggy but once I got it all set up configuring zones and creating a program was easy. All in, took me about 15 minutes to switch all my wires and modules from the Pro-C over and set up my first program. Glad I just did it myself because my Sprinkler company offered me a "special deal" to install one of these for nearly $700! Pays to learn how to do this stuff yourself because it's not hard at all and you absolutely don't need a contractor to do it for you and rip you off.One gripe: the predictive watering stuff seems a little wonky. It rained last night and I have the default predictive settings on to not water if there's 0.1 in rainfall or 80%+ chance of rain, and it still ran. Yes, I have my location and everything set up correctly. Chalking it up to first watering weirdness so will see if it improves. If not, I'll have to set up a smarter automation in Home Assistant to toggle watering for that day. Speaking of Home Assistant, I set up the integration in minutes and it works great, so I can turn on watering or any zone easily from HA.

I replaced a 12-year-old Hunter Pro-C controller that was starting to malfunction, including watering two zones simultaneously. After some investigation, I discovered that the issue was caused by faulty zone expansion modules—a common problem according to my local irrigation supply house specialist. While I could have simply replaced the modules, I decided it was time for an upgrade.I opted for a WiFi-enabled model with a phone app and weather forecast integration, and I'm glad I did. The controller comes with a standard module which is just 4 zones and the main valve. I had to purchase both the 3 and 9 zone expansion modules to get to the 13 zones I need for my house since you need to increment with the 3 zone module first and can't just add a the single 9 zone module by itself.The setup was seamless, connecting to my 2.4G home WiFi was easy, and I opted to program the zones and settings using my laptop with the Hydrawise website. I was also able to reuse my existing rain/freeze sensor as well as my "Roam" remote, which was good (if not redundant).So far, everything is working flawlessly. I’m extremely satisfied with this upgrade and would definitely purchase it again or recommend it to a neighbor!

We replaced an old Hunter Douglas controller with this model and are SO glad that we did. The option to control the water from my phone with the easy to use app has saved me from trudging to the garage many times to turn the water on or off. Plus our water bill was substantially lower as it only waters when needed. 100% reccomend.

Device was easy to install in place of our old hunter system.Installation took approximately 30 minutes including the programmingInterface to Iphone is easy to use and well thought out.This device can be controlled by your phone android or AppleThe plus is you can also adjust settings right on the unit if neededSimplifies adjusting heads. You can trigger zone remotely for checking, no need to walk back to the box.Box seals well and is lockableGreat price and I would buy again.

Automatic Controls worked great. Manual Control from the controller worked great. Manual Control from the app did not work well at all. There was a 1-3 minute delay from when you turned a zone on or off manually from the app. Not very useful if you are working on a specific zone turning it on or off. Faster to manually turn it off from the controller.

This system replaced an old manual Hunter sprinkler box. Most physical interfaces were different as well as the mounting. Main issue is the poor/lack of integration with Google, Homeseer and Hubitat. Rachio, Rainbird and Orbit appear to have more options.

I was looking to upgrade our Pro-C model (with the dial and blue buttons) to be Wi-Fi enabled, so it’s easier to adjust programs and test zones without walking back and forth all the time. That upgrade is really just an HPC faceplate but is hard to find by itself, and when you do it’s almost the same price as this entire unit. So I bought this just to use the faceplate! (And if something ever happens to the main board of the Pro-C it’s nice to know we have a backup device that could replace it.)Swapping it into our Pro-C was a breeze: unplug the power, detach the ribbon cable, detach the old faceplate, attach the HPC one, attach the ribbon cable, and plug it back in. There’s a tiny touchscreen to get connected to your Wi-Fi (2.4 GHz only) and then you add the serial number to your Hydrawise account and you’re set. So much easier to program now, and the customizable temperature and precipitation adjustments give you more control.