An automated and intelligent device installed to over-ride the irrigation cycle in wet weather conditions. This ensures that over-watering does not occur

a device that sends a signal to the automated home sprinkler system’s controller that rain is falling so that the controller will turn off and/or delay the restart of sprinklers.

A sensor that can tell whether it is raining or not. If rain is sensed, then it will send a signal to the drip irrigation system hose end timer or controller to keep it from turning on, thus saving wa [..]

The Volkswagen rain sensor automatically regulates the windscreen wiper speed according to the intensity of the rain. The sensor is housed in the mount of the interior mirror. It consists of a number of infrared LEDs and a central photodiode. The light emitted by the LEDs is reflected by the windscreen onto the photo sensor. The more drops of water [..]

The Volkswagen rain sensor automatically regulates the intermittent wipe intervals of the windscreen wiper according to the intensity of the rain. The sensor is housed in the base of the interior mirror. It consists of a number of infrared light-emitting diodes (LEDs) and a central photodiode. The light emitted by the LEDs is reflected by the winds [..]

A sensor, usually located on the windshield, that senses rain and turns the wipers on automatically.

A sensor that detects rain and automatically turns on your windshield wipers

The rain sensor collects rainfall data at the point of mounting and sends this to the thermometer-hygrometer sensor for transmitting to the base station.