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Rain Sensor Explained

  • Writer: Simply Sprinkler of Texas
    Simply Sprinkler of Texas
  • Aug 17
  • 2 min read

Hey Texans! Is your irrigation system watering your lawn while it's raining? A working rain sensor is key to a healthy lawn and a lower water bill. At Simply Sprinkler of Texas, we're experts in all things irrigation, and we want to help you understand how these small but mighty devices can make a big difference.


What is a Rain Sensor? 🌧️

A rain sensor is a simple device that connects to your sprinkler system's controller. Its main job is to interrupt the irrigation schedule when it detects a specific amount of rainfall. This prevents your system from running unnecessarily, saving water and money. It's an essential component for any modern, efficient sprinkler system, especially in areas with unpredictable weather like Houston, Austin, and Dallas.


How Do Rain Sensors Work?

Most rain sensors contain a set of moisture-sensitive disks. As these disks absorb water, they expand, which pushes a switch to break the electrical connection to your sprinkler controller. This turns the system off. Once the disks dry out and shrink back to their original size, the connection is restored, and your sprinkler system can resume its normal watering schedule.


Another type, the wireless rain sensor, works similarly but communicates with the controller via a radio signal, making installation easier. Both types ensure your system only waters when your lawn actually needs it.


Why is a Rain Sensor Important for Your Texas Home?

Saves Money: You won't be paying to water your lawn and the street at the same time. This can lead to a significant reduction in your water bill.


Conserves Water: It's an environmentally responsible choice. Water is a precious resource, and using it wisely helps our communities.


Prevents Over-Watering: Too much water is just as bad as too little. Over-watering can lead to root rot, fungal diseases, and a less healthy lawn.


Complies with Local Regulations: Many Texas cities, including parts of Houston, Austin, and Dallas, have water conservation ordinances. A functioning rain sensor can help you comply with these rules and avoid fines.


When to Call Simply Sprinkler of Texas for Rain Sensor Repair or Installation:

If your sprinkler system is running during or right after a rainstorm, it's a clear sign that your rain sensor isn't working correctly. It might be a simple wiring issue, a faulty sensor, or it may need to be calibrated. Our professional technicians can quickly diagnose the problem and get your system back in shape.


Whether you're in Houston, Austin, or Dallas, our irrigation team is ready to help with your sprinkler repair. We specialize in troubleshooting and fixing all irrigation system components, including rain sensors, to ensure your system is operating at peak efficiency.


Don't let your sprinklers run in the rain. Contact Simply Sprinkler of Texas today for a check-up and repair. We'll make sure your system is smart enough to handle Texas weather, saving you water and money.


Irrigating reapir of a rain sensor.

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