This gas sensor is suitable for detecting LPG (composed of mostly propane and butane) concentrations in the air. You can adjust the sensitivity with the potentiometer.
Specification
Document
Wiring:
Test Arduino Code:
void setup()
{
Serial.begin(9600); //Set serial baud rate to 9600 bps
}
void loop()
{
int val;
val=analogRead(0);//Read Gas value from analog 0
Serial.println(val,DEC);//Print the value to serial port
delay(100);
}