Rain Sensors FAQ
IN THIS ARTICLE
What is a rain sensor, anyway?
A rain sensor or rain switch is a switching device activated by rainfall. There are two main applications for rain sensors. The first is a water conservation device connected to an automatic irrigation system that causes the system to shut down in the event of rainfall. ...
Rain sensors for irrigation systems are available in both wireless and hard-wired versions.
How does a rain sensor work?
This differs from Rachio's proactive approach of checking the local weather forecasts. Rachio takes these predictions and compares them to the Rain Skip threshold you select within the Rachio App.
How does Rachio use rain sensors?
Rain sensors are useful as a sort of "insurance policy" against inaccurate data from your local weather station(s). Unlike Rachio's Rain Skip feature, however, a schedule skip due to an activated rain sensor does not get recorded as rain savings.
The Rachio does not need a rain sensor to operate, but the unit can take the input from existing rain sensors - interrupting the [common wire] signal.
Rachio's Weather Intelligence features take a broader view of the weather, factoring in the last time the sprinkler system ran, the amount of precipitation since the last time the system ran, temperature that affects evaporation, forecast for precipitation rates until the next time your system can run, seasonality, and more.
A rain sensor can help, but is strictly supplemental.
What type of rain sensor does the Rachio support?
Supported Rain Sensors (Click name for Specs & Instructions)
Rain Sensor Setup
** Please see above for our list of Supported Rain Sensors, each with links to additional information.
How do I connect a rain sensor?
For specific instructions, please choose your Rachio model, below:
How do I enable my rain sensor in the Rachio App?
Sensor toggles are found under the Advanced options. Due to added features on the Gen2, these Advanced options will vary based on the device. For further instructions, choose your device below:
Test & Troubleshoot
CAUTION: To prevent severe equipment damage, never connect the Rain Sensor to any power source greater than 24 VAC. If you are in doubt, contact a qualified installer or electrician. The Sensor should be inspected for damage and manually tested regularly to ensure proper operation.
How can I test my rain sensor?
What do the app notifications tell me about my rain sensor?
For further details, please visit our article on Rain Sensor Notifications.