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Rain sensor installation

A rain sensor stops your system watering during and after a downpour, which in a Triangle summer is most of the water you are currently wasting. Local & insured across the Triangle.

10+ yrs serving the Triangle
Local insured & accountable
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12-mo workmanship warranty

Rain sensor installation, placed where it will actually work

Rain sensor installation adds the one component that lets an irrigation system respond to the weather instead of ignoring it. It is a small device and an inexpensive visit, and on a Triangle property it usually pays for itself inside a season or two.

The reason it matters here is our rainfall pattern. The Triangle gets a good amount of summer rain and it arrives in bursts — an inch in an afternoon thunderstorm, then nothing for ten days. A controller with no sensor runs its schedule straight through the storm and again the following morning, watering ground that is already saturated. In our clay that is worse than merely wasteful: saturated clay sheds the extra rather than absorbing it, so the water runs off into the street, and roots that never dry out are the ones that rot. Placement is where most installations go wrong. A sensor tucked under an eave stays dry through a downpour and never trips; a sensor in a gutter line trips in a heavy dew and leaves your lawn off for days. It needs open sky, the same exposure as the lawn it protects, and a mounting height where nobody catches it with a ladder.

We install rain sensors for homeowners in Cary, Raleigh, Apex, Morrisville, Holly Springs, Fuquay-Varina and throughout Wake County — part of our smart controller installation service.

Cary Sprinklers technician mounting an irrigation controller beside a home in Cary, NC

What rain sensor installation involves

Diagnosed right and fixed with genuine Hunter, Rain Bird & Toro parts.

Choosing the right sensor

Expanding-disc sensors are simple and reliable; electronic and soil-moisture sensors give finer control and suit a smart controller. We match the sensor to the controller you already have.

Placement with open sky

The sensor goes where rain actually reaches it and where it dries at the same rate as the lawn. Under an eave or below a gutter line are the two placements that guarantee it will not work.

Wired or wireless

Wired sensors are cheaper and never need a battery; wireless suits properties where running a wire to open sky is awkward. Either lands correctly at the controller’s sensor terminals.

Set to a sensible threshold

Most sensors let you set the rainfall that triggers a shutdown. Too low and you never water in summer; too high and it may as well not be there. We set it for Triangle rainfall and explain it.

Bypass you can actually find

Every controller has a way to override the sensor for testing or a dry spell. We show you where it is, because a sensor nobody can bypass gets ripped off the wall eventually.

Tested before we leave

We trip the sensor deliberately and confirm the controller responds, then reset it. An untested sensor is an assumption, not an installation.

Signs you need a rain sensor

  • Your system runs during or right after a thunderstorm
  • You find yourself switching the controller off manually when rain is forecast
  • Water runs off into the street rather than soaking in
  • The controller is a smart unit but has no sensor connected
  • Your existing sensor has never once stopped a cycle

How the work happens, step by step

No mystery, no runaround — here’s the order we work in.

Check the controller’s sensor input

Nearly every controller made in the last twenty years has sensor terminals, often with a jumper across them. We confirm yours and what it will accept.

Find the right mounting point

We look for open sky with the same exposure as the lawn, clear of gutters, eaves and overhanging branches, and out of the way of ladders and mowers.

Mount and wire

The sensor is mounted level and secure, the wire routed neatly, and the jumper removed so the controller reads the sensor rather than ignoring it.

Set, test and explain

We set the threshold, trip the sensor to prove the shutdown works, then walk you through the bypass so you are in control of it.

Reviews

What our Triangle neighbors say

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Shahar Moscovits profile picture
Shahar Moscovits
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I’m so glad I found Cary Sprinklers! Adam, the owner, is incredibly friendly, honest, and straightforward. He found several problems with our sprinkler system and was able to fix them for a very reasonable price. We had other companies come out who tried to upsell us on repairs costing thousands of dollars, so the difference was unbelievable. I have some experience in this field myself, so I know how to evaluate vendors and recognize when someone is being honest and when they’re simply trying to sell you more work. Adam was clearly focused on actually solving the problems rather than taking advantage of us. He saved us a tremendous amount of money, and we really appreciate it. Thank you so much, Adam, for your honesty, professionalism, and excellent work. Highly recommended!
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cyndy White profile picture
cyndy White
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This is the second time we have used Cary Sprinklers, and both times involved dirty digging and repairing complex leaks. The first was an underground valve leak and they put the dirt and our sod back as if it was their own home. The site around our second job by our backflow was also filled in nicely. Adam the owner, Matt the estimator, and Colby the irrigation magician were all great to work with. We think our irrigation in our box came apart when TOC main busted and the extreme pressure of 200+ psi was too much. Matt did a thorough job looking at our issue, answering all my questions about the possible TOC main break playing a part, and giving quote for the time he felt it would take. Keep in mind, this is the type of small business where you need to be flexible on the time of arrival since prior jobs may put them behind. With this said, the crew will spend all the time needed to repair the issue you have at your home and not rush to make things just good enough. They want to make sure the repair is done to your satisfaction. I texted Adam several times and he had a prompt response time. He was also prompt via email with a post work invoice question. We recommend supporting Cary Sprinklers for the reasons above and because this is a small business growing roots in our community.
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Matt Pickens profile picture
Matt Pickens
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Very fast service and Colby was very professional. Highly recommend using Cary Sprinklers.
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Lynne profile picture
Lynne
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Fantastic company! I highly recommend Cary Sprinklers. They did a great job!
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James Cleary profile picture
James Cleary
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Cary Sprinkler was easy to get an appointment online, they kept me informed every step of the way. The technician was on time, knowledgeable and personable. Would use again and recommend.
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Beth K Mandell/Lerner profile picture
Beth K Mandell/Lerner
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Adam and Gerald showed up right on time and kept me updated with texts the night before and the day of with their ETA. I needed a new zone added for part of the yard that wasn’t getting enough water anymore, and they did a great job. Fair pricing, excellent communication, and very professional — I’m really happy with the result.
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Kate Wotton profile picture
Kate Wotton
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5 stars — Highly recommend Cary Sprinklers! We hired Cary Sprinklers to expand our existing irrigation system by extending one zone and adding a completely new zone. From the beginning, they were professional, knowledgeable, and very easy to work with. What really impressed us was the equipment and efficiency. They used a Toro Dingo to trench the new lines, which allowed them to get the work done quickly and professionally while keeping the disruption to our yard to a minimum. The crew clearly knew what they were doing, and the installation was done right. Adam took the time to explain what we needed and why, and the communication throughout the project was excellent. The new zones give us much better coverage of the property, and everything is working exactly as it should. We couldn’t be happier with the finished system. The whole process was smooth, and the work exceeded our expectations. We would definitely use Cary Sprinklers again.
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Beth Turkish profile picture
Beth Turkish
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Cary Sprinklers is amazing. Adam is professional, capable, and wonderful to do business with. We called him because we had trouble with our timer app and controller. It wasn’t a brand that he usually works with, but he figured it out and fixed it anyway. Additionally, his team did an amazing job removing this massive root to get a broken sprinkler out of the ground and replace it and even under budget! I’ve done business with a few sprinkler companies in my lifetime, and these guys are the best!! They are honest, reliable, and very detail oriented. You will not be sorry if you call Cary Sprinklers.
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John Donellan profile picture
John Donellan
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Adam came out and made adjustments to several unfamiliar sprinkler heads that had been causing some lawn coverage issues. He worked quickly & efficiently to correct the issues to my satisfaction. A very good experience!
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Why homeowners choose us

01

Placement over product

The best sensor mounted badly is worse than a basic one mounted properly. We spend the time finding the right spot, because that is the whole job.

02

It gets tested in front of you

We trip it and show you the controller responding. You should never have to wonder over the summer whether it is actually doing anything.

03

Honest about the payback

A sensor is a genuinely good return on a Triangle property, and we would rather tell you that straight than dress it up. Upfront pricing, guaranteed work, 12-month workmanship warranty.

Rain sensor installation in Cary, Raleigh & the whole Triangle

We install and replace rain and soil-moisture sensors across the Triangle, on new and existing controllers alike. Choose your town for local details: Cary · Raleigh · Apex · Morrisville · Holly Springs · Fuquay-Varina.

Related services we handle on the same visit: smart controller installation · controller programming · irrigation maintenance.

Rain sensor installation FAQ

Will a rain sensor work with my existing controller?

Almost certainly. Nearly every controller made in the last twenty years has a sensor input, usually with a jumper wire across the terminals from the factory. Removing that jumper and landing the sensor is the whole electrical job.

How much water does a rain sensor actually save?

On a Triangle property, a meaningful amount — our summer rain arrives in heavy bursts, and a system with no sensor waters straight through them and again the next morning. It is one of the cheapest components on the system and one of the few that pays for itself.

Where should the sensor be mounted?

Somewhere with open sky that dries at the same rate as the lawn. Under an eave it stays dry and never trips; below a gutter it trips on heavy dew and leaves the system off for days. Both mistakes are common.

What is the difference between a rain sensor and a soil moisture sensor?

A rain sensor reacts to rainfall as it happens. A soil moisture sensor measures what is actually in the ground, which is more accurate and more useful in clay, though it costs more and needs correct burial depth.

Do you install rain sensors near me?

If you are in Cary, Raleigh, Apex, Morrisville, Holly Springs, Fuquay-Varina or anywhere in Wake County, we cover your area. Call or text 919-341-9644.

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Tell us what’s going on and we’ll get right back to you — usually the same day. Prefer to talk? Call or text 919-341-9644.

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    Stop watering in the rain

    A small component, placed properly and tested in front of you. Call or text 919-341-9644.

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