Steam Sensor

https://www.keyestudio.com/2016-new-keyestudio-vapor-sensor-for-arduino-p0401-p0401.html

Introduction

Vapor Sensor is an analog sensor and can make a simple rainwater detector and liquid level switch. When humidity on the face of this sensor rises, output voltage will increase.

Caution: connection parts is non-waterproof, so please don’t put them into water.

Performance Parameters

• Working Voltage: 3.3V or 5V
• Working Current: <20mA
• Range of Working Temperature: -10°C~+70°C
• Interface Type: Analog Signal Output
• Size: 36mm x 20mm
• Pin Definition:
  • S: Signal Output
  • +: Power Supply(VCC)
  • -: Ground(GND

Sample code

https://www.dfrobot.com/wiki/index.php/Steam_Sensor_(SKU:SEN0121)

void setup()

{

Serial.begin(9600);// open serial port, set the baud rate to 9600 bps

}

void loop()

{

int sensorValue;

sensorValue = analogRead(0); //connect Steam sensors to Analog 0

Serial.println(sensorValue); //print the value to serial

delay(200);

}