How can a rain sensor improve irrigation efficiency?

A rain sensor improves irrigation efficiency primarily by preventing unnecessary watering during rainfall. When it detects moisture in the environment, it signals the irrigation system to postpone any scheduled watering, ensuring that plants receive the water they need without waste. This feature not only conserves water resources but also helps prevent over-saturation of the soil, which can lead to plant stress and wasteful runoff.

While options related to increasing water pressure, extending irrigation times, and controlling soil temperature may seem relevant to irrigation practices, they do not directly address the role of a rain sensor in optimizing water usage. The main objective of a rain sensor is to reduce unnecessary irrigation, thus contributing to efficient water management in landscaping and agricultural practices.