Rain sensors are electronic devices used in modern, automated plant irrigation systems. Are you thinking about installing a rain sensor and don't know where to start? Use our guide! We explain why it's worth equipping your garden irrigation system with rain sensors - wired or wireless - and suggest where to mount the rain sensor so that the system works effectively.

Check out the rain sensors at the Onninen wholesaler
What are the benefits of a rain sensor in the garden?
Rain sensors are responsible for detecting and controlling precipitation. They measure in real time and provide feedback in the form of a signal sent to the installation. They work with the controller, which is equipped with the automated irrigation system. The controller optimizes the operating parameters in terms of the prevailing humidity. When rainfall occurs, watering of plants in the garden is automatically, temporarily suspended, which helps avoid wasting water and damaging crops due to over-irrigation.
The modern rain sensor guarantees high precision and immediate response to rain. It is easy to install, operate and maintain. No specialist knowledge or skills are required to configure and operate it. The device can be exposed to continuous atmospheric conditions.
Rain sensors often work with other smart home or garden management systems. They can send data to shutter and sunshade controllers or temperature/frost gauges, for example. A frost sensor will break the circuit when the temperature drops below a set critical value, minimizing the risk of irrigation system failure. Ultimately, you have the chance to create a consistent, reliable installation that is perfectly tailored to the needs of the household.
It is worth noting that the irrigation sensor is a reusable device. It does not lose its shape or sensitivity to moisture over time. A typical design includes a boom or hook and a plastic container that contains hygroscopic disks. After drying, they regain their original shape.
Where should the rain sensor be mounted?
There are two main types of rain sensors: wireless and wired - each mounted differently.
The wireless rain sensor is equipped with a transmitter, or a radio antenna, which sends a radio signal to the receiver when precipitation exceeds the allowable level. The transmitter also sends information to the receiver about the rings drying out. The receiver also has a radio antenna. It is connected to the controller by a cable. It should be located as close as possible to the controller and the solenoid valves.
The wired rain sensor is connected to the controller by a cable, so its installation location should be carefully considered. The shorter the cable, the stronger the signal and the lower the risk of interruptions. The cable is often included in the set. If a several-meter cable cannot be used between the sensor and the controller, it is better to consider a wireless option - necessarily compatible with your system.
Regardless of the type you choose, the rain sensor should be placed in a location in the garden that allows for easy measurement of precipitation, is uncovered, but is also protected from all-day exposure to sunlight.
Rain sensors at the Onninen wholesaler
In our wholesale store you will find various types of rain sensors - both basic models and more advanced devices, offering, among others, sensitivity adjustment. All rain sensors come from manufacturers or official distributors. We cooperate only with renowned companies and brands, such as F&F or Kontakt-Simon SA. This gives our customers the certainty of long and satisfactory use of individual devices and the irrigation system created on their basis.
Are you wondering whether a rain sensor of a given type will be useful in your garden? Do you have any additional questions? Contact us! We will advise you which rain sensor to choose for your garden.