Water is one of our most precious resources. The costs of delivering water to your home are increasing all the time. With this being said, it would be wise to be sure that your underground lawn irrigation system is equipped with a rain sensor and that it is working properly.
What is a rain sensor? How does it work?
A rain sensor is a unit that shuts off your irrigation system temporarily when it senses a certain amount of rain. Over the last few years rain sensors have improved greatly. Most of the newer models are wireless and they are comprised of two pieces: transmitter and receiver. The transmitter is located outside where it can be seen by the sun and the rain. When it takes in enough moisture it sends a signal to the receiver which is wired to your controller and automatically turns your system off. After it stops raining and the transmitter dries out it will turn your system back on automatically.
In the past, most sensors were hard wired to your controller. This would limit the location that the sensor could be installed. Now that most sensors are wireless, they have a much longer range of operation. This allows the contractor to place the transmitter in the proper location to be sure that it get exposure to the rain and the sun.