Check the listing for details. Rain sensor for Arduino and embedded with detection plate and transducer. Condition: New. Listed at 18.93 USD. Consisting of a base with a large detection area (34x47 mm) on both faces and control electronics, this product is particularly suitable as a rain detector. The electronic section has an analogue output, a digital one, a trimmer to adjust the input sensitivity and two status LEDs. The D0 digital output can directly drive devices with a maximum absorption of 100 mA such as relays, buzzers, small fans, etc. When the detection area is not wet by rain, the digital output D0 is at a high logic level, when it is wet it goes to a low logic level. By connecting the analog output A0 to the analog input of the Arduino it is possible to know the amount of rain that fell on the sensor. Power supply: 5 Vdc. Can be used with Arduino and embedded systems available on EBAY | MECTRONICA STORE SPECIFICATION.