Model N/A Quantity 1 Color White + silver Material Half fiberglass + FR4 Features This steam sensor can be connected to the Arduino IO expansion shield directly. The output voltage will increase when the humidity of the sensor surface goes up. Specification Power supply:3.3V~5V; Output voltage signal:0~4.5V(at 5V) or 0~3.0V(at 3.3V); Pin definition: analog output (yellow wire) GND (black wire) power (red wire) Application Rain detector steam level switch touch sensor based on humidity Other Warning: The connector is not waterproof please be careful not to put the connector directly in water. English Manual/Spec Provides schematic diagram Packing List 1 x Sensor module 1 x 3P connecting cable (23cm)