MQ-3 Alcohol, Ethanol Sensor Module

55.00 EGP

In stock

MQ-3 Gas Sensor with high sensitivity to Alcohol, Gasoline can resist, Smoke, Water vapor interference.

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SKU: MD-22518 Category: Tags: ,
  • This module is made using Alcohol Gas Sensor MQ3.
  • It is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L.
  • The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air.
  • It’s conductivity increases as the concentration of alcohol gases increases.
  • It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline.
  • This module provides both digital and analog outputs.
  • Threshold level for digital output can be easily adjusted using the preset on the board.
  • MQ3 alcohol sensor module can be easily interfaced with Micro-controllers, Arduino Boards, Raspberry Pi etc.
  • Operating Voltage : 5V ±0.1 
  • Current Consumption : 150mA
  • Digital Output: TTL digital quantity 0 and 1 (0.1 and 5V).
  • Analog Output: 0.1~0.3V.
  • Concentration : 0.05 mg/L ~ 10 mg/L Alcohol
  • Operation Temperature : -10°C ~ 70°C


  • Low Cost
  • Fast Response
  • Stable and Long Life
  • Good Sensitivity to Alcohol Gas
  • Both Digital and Analog Outputs
  • On-board LED Indicator

Pin Out

  • VCC: Input Power Supply
  • GND: Supply Ground
  • DO: Digital Output
  • AO: Analog Output

Package included:

  • 1 x MQ-3 Alcohol, Ethanol Sensor Module
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