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MQ303 GAS SENSOR


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  • Rs. 295.00 (inc GST)
    Rs.250.00 + GST

    Qty :

GST Invoice on all Purchase. So you will be eligible to take input tax credit.

IF component not in Stock or require more quantity or want to buy in bulk e-mail us your requirements on: dnatechindia "at" gmail.com.

Shipping : Due to Covid-19 situation delivery will be affected. Delivery period due to covid-19 issue will be from 4 - 12 days depending upon your location.

MQ303  GAS SENSOR 

MQ303 GAS Sensor is suitable for sensing Alcohol.

The MQ-303A is a tin dioxide semiconductor gas sensor which has a high sensitivity to alcohol with quick response speed. This model is suitable for alcohol detection such as portable breath alcohol checker or ignition locking system in automobiles.

We have Various sizes of Gas Sensor. Check out our complete collection of Gas Sensor.


If you are in Nashik you can buy this Electronic Component at our local shop at New CBS, Nashik or you can place order online and get it delivered at your doorstep anywhere in India.

Feature Of MQ303 Alcohol GAS SENSOR

  • For ethanol vapor has a high sensitivity and good selectivity
  • Quick response and resume
  • Long life and reliable stability
  • Simple drive circuit

Application Of MQ303 Alcohol GAS SENSOR

  • Probe vehicle drivers and other workers of the risks of drink supervision and inspection and other places for ethanol vapor .

Specification Of MQ303 Alcohol GAS SENSOR

  • For gas : Alcohol ( ethanol )
  • Detection range : 20 to 1000ppm
  • Characteristics of gas : 125ppm alcohol
  • Sensitivity : R in air / Rin typical gas 3
  • Sensing Resistance : 4 to 400K in air atmosphere
  • Response time : 10s (70% Response)
  • Recovery time : 30s (70% Response)
  • Heating resistor : 4.5 0.5
  • Heating current : 130mA
  • Heating voltage : 0.9V 0.1V
  • Heating power : 130mW
  • Measure the voltage : 24V
  • Working conditions :
                                    -    Ambient temperature : -20 ~ +55
                    -    Humidity : 95% RH
                    -    Environmental oxygen content : 21%
  • Storage conditions :
                                    -    Temperature : -20 ~ +70
                                    -    Humidity : 70% RH

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