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Alcohol Sensor MQ-3
CHF 6.88

Stock: 2

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer.

It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration.

The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0 to 3.3V ADC.

It can used in the supervision and detction to motorized vehicle drivers and other operating personnel at risk, in addition, it can be used to check alcohol vapor in other places.


  • High sensitivity
  • Quick response and recovery
  • excellent selectivity
  • Simple driver circuit
  • Outstanding stability and long-life performance


  • Response Time: ≤10s(70% response)
  • Recovery Time: ≤30s(70% response)
  • Heating Resistance: 31Ω3Ω
  • Heating Current: ≤180mA
  • Heating Voltage: 5.0V0.2V
  • Heating Power: ≤900mW
  • Measuring Voltage: ≤15V
  • Operating Condition:
    Ambient Temperature: -10° to 65°C
    Humidity: ≤95%RH
  • Storage Condition:
    Temperature: -20° to +70°C
    Humidity: ≤70%RH

This product was added to our catalog on Saturday 14 May, 2011.
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