FC-37 Rain Sensor with YL-38 Comparator Module, Arduino CompatibleDescription:This is a simple sensor that can sense whether there is water droplet on the conductor strip.Therefore the status of the weather of whether it is raining / snowing or no rain.You can place the wide area electrode conductor on the area where the water should be present.When the module detects water, electricity conducts and therefore the sensor will output a trigger signal (LOW for has water and HIGH for no water).Features:Comes with a wide area conductor strip for sensing water dropletComes with 8 inch Dupont cable for detected signal transmissionBuilt-in LM393 comparatorOperating Voltage : 35 VoltSignal Output Current : 15 mAType of Output : 35 Volt (Digital TTL)Analog Output : 05 Volt max.Comes with M3 mounting holes for easier installationBuilt-in LED power indicatorBuilt-in LED output indicatorFC-37 with YL-38