View source for Carbon Monoxide Sensor - MQ-7

==Introduction==
[[File:MQ11.jpg]]

[[File:MQ-7.jpg]]

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.

==Features==
* High sensitivity to CH4，Natural gas
* Small sensitivity to alcohol, smoke            
* Fast response  
* Stable and long life     
* Simple drive circuit

==Specification==

[http://www.geeetech.com/Documents/MQ-7%20Datasheet[1].pdf MQ-7 datasheet]

==Usage==
[[File:MQ-4 pic.jpg]]

[[File:MO-2 2.jpg]]

 VCC - 5V
 GND - GND
 S   - Analog pin0

==Example code==
 int sensorValue;
 void setup()
 {
  Serial.begin(9600);      // sets the serial port to 9600
 }
 void loop()
 {
  sensorValue = analogRead(0);       // read analog input pin 0
  Serial.println(sensorValue, DEC);  // prints the value read
  delay(100);                        // wait 100ms for next reading
 }

==How to buy it==
Click here to buy [http://www.geeetech.com/liquefied-petroleum-gas-sensor-mq6-p-192.html Gas Sensor - MQ-6]