Smart Irrigation

What Is a Rain Sensor?

A rain sensor is a device that detects rainfall and can temporarily interrupt automatic irrigation.

Rain falls on a sensor. A dashed signal line connects the sensor to a controller, which pauses scheduled watering. — Original conceptual diagram. Not to scale; actual equipment and site conditions vary.

How to Understand It

It helps prevent a system from watering during or soon after rain. It does not directly measure water available around plant roots. The diagram shows a signal relationship, not a wiring guide; interruption and reset behavior depend on the device.

Related terms

Irrigation Controller
Soil Moisture Sensor
Weather-Based Irrigation

Learn more

What Makes an Irrigation Controller Smart

Was this helpful?

Inaccurate / tool error Too complex / hard to follow Didn't solve my problem

Thank you for your feedback!