Specification Brand : Reland Sun BulletPoint : DC 12V Water Level Detection Sensor Module Liquid Level Controller For Pond Tank Warter Level Detection BulletPoint1 : Raindrop Snow Humidity Detection Controller Sensor Module for Arduino is used for used for rain detection and also as a switch when raindrop falls through the raining board and for measuring rainfall intensity. BulletPoint2 : Raindrop Snow Humidity Detection Controller Sensor Module has an adjustable switching contact with potentiometer and LM393. BulletPoint3 : When using these Raindrop Detection Controller Sensor Modules you can choose to use the digital or analog output. BulletPoint4 : Power supply supported by AZ-Delivery Raindrop Snow Humidity Detection Controller Sensor Module for Arduino is: 3.3 V to 5 V DC. BulletPoint5 : You will receive one chimney fairing cover. If you have any questions, please feel free to contact us. We will provide you with sincere service ExternallyAssignedProductIdentifier : 6118720682568 ExternallyAssignedProductIdentifier1 : 0739227848767 ExternallyAssignedProductIdentifier2 : 739227848767 ItemName : Raindrop Snow Humidity Detection Controller Sensor Module ItemPackageQuantity : 20 ItemTypeKeyword : automatic-lawn-irrigation-controllers Manufacturer : Reland Sun Material : Stainless Steel MountingType : Wall Mount OutputVoltage : 110 volts PartNumber : 739227848767 PowerSourceType : Corded Electric ProductDescription : It comes in 2 parts, the sensor plate and the sensor module board. The sensor plate has 2 PCB tracks which are routed parallelly surrounding it. These tracks are not connected, but when water/rain drops to the surface of plate and changes the resistance between the tracks because water/rain is conductive, this further reduces the resistance between these 2 tracks. The more water/rain touches the plate, the lower resistance becomes. There are 4 pins used to interface Moisture Sensor board to microcontroller. User may use either Digital Output (DO) or Analog Output (AO) or both pin as output pin. ProductSiteLaunchDate : 2021-12-14T13:00:58.222Z Size : 11cm Style : Automatic,Retro UnspscCode : 46171600 Voltage : 12 volts