Analog_Gas_Sensor(MQ3)_(SKU_SEN0128)

Introduction

The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.

Specification

• Power supply needs: 5V
• Interface type: Analog
• Pin Definition: 1-Output 2-GND 3-VCC
• High sensitivity to alcohol and small sensitivity to Benzine
• Fast response and High sensitivity
• Stable and long life
• Simple drive circuit
• Size: 40x20mm

Pin Definition

1. Signal Output
2. GND
3. Power

Connection Diagram

Sample Code

///Arduino Sample 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);
}

shopping analog alcohol sensor(mq3) (sku:dfr0128)

category: Product Manual category: DFR Series category: Sensors category:source category:Diagram