MQ-3 Gas sensor for ethanol detection Compatible with Arduino

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$3.85 - $6.60 / Pieces | 1 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
Supply Ability
Supply Ability:
1000 Piece/Pieces per Week
Packaging & Delivery
Packaging Details
Box: 16*12*10 cm
Gross weight :0.1kg
Lead Time :
3-5 days according to quantity

MQ -3 series gas sensor is designed to meet the demand of enviromental protection, it MQ - 3 gas sensor,with high sensitivity to ethanol, can resist the interference of gasoline, smog, vapor, detect ethanol in the air sensitively.the material of MQ - 3 gas sensor is SnO2 ,which has low conductivity in clean air. With a 3p line connecting  sensor shield(Arduino-Compatible) , through  mega168 controller programming(Arduino-Compatible), it an be made ethanol alarm, alcohol tester with buzzer module and relay module.

Application: used in detecting if someone is drunk or other ethanodetection.

  • Working Voltage:3.5-5.0 V
  • Detection range: 10-100ppm ethanol
  • Characteristic gas: 125ppm ethanol
  • Heating voltage: 5 + - 0.2 V (AC·DC)
  • Loop voltage:≤24V DC
  • Load resistance: adjustable
  • Voltage in clean air: ≤1.5 V
  • Sensitivity: Rin air/Rin typical gas≥5
  • Recovery time: ≤30S
  • Service life: 5 years
  • Size: 20.5 mm x 41mm
    Weight: 5g

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