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ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327)

ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327)
ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327)
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R323
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The ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327) stands out for its dual analog and digital outputs, allowing flexible integration with Arduino, Raspberry Pi, and other microcontrollers. Unlike simple alcohol detectors, this module uses a semiconductor SnO2 sensing element with an adjustable ... Read More
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Stock 11 Code 3516289 Brand ALLNET Model ALL_OY_3327 Warranty 2 Years

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Estimated delivery Tuesday, October 6
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The ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327) stands out for its dual analog and digital outputs, allowing flexible integration with Arduino, Raspberry Pi, and other microcontrollers. Unlike simple alcohol detectors, this module uses a semiconductor SnO2 sensing element with an adjustable potentiometer for sensitivity tuning, making it suitable for both threshold-based alarms and precise analog measurements.

Highlights

  • Detects alcohol (ethanol), benzine, hexane, LPG, and CO
  • Analog (0-5V) and digital (TTL) output signals
  • On-board potentiometer for sensitivity adjustment
  • Fast response time of ≤10 seconds
  • Wide detection range: 0.05–10 mg/L alcohol (300–10000 ppm)
  • 4-pin header interface (VCC, GND, DOUT, AOUT)

In daily use

The MQ-3 sensor is ideal for breathalyzer projects, air quality monitoring, and safety systems. After a preheat time of approximately 20 seconds, the sensor provides stable readings. The analog output can be read by any ADC, while the digital output triggers when the gas concentration exceeds a threshold set by the potentiometer. The module operates at 5V DC and consumes less than 150 mA, making it suitable for battery-powered applications.

Full specifications

  • Sensor type: Semiconductor gas sensor
  • Target gases: Alcohol (ethanol), benzine, hexane, LPG, CO
  • Detection range (alcohol): 0.05–10 mg/L (300–10000 ppm)
  • Operating voltage: 5V DC
  • Heater voltage: 5V DC
  • Output signal: Analog (0-5V), Digital (TTL)
  • Interface: 4-pin header (VCC, GND, DOUT, AOUT)
  • Response time: ≤10 s
  • Recovery time: ≤30 s
  • Operating temperature: -10°C to 50°C
  • Operating humidity: ≤95% RH
  • Sensor element material: Tin dioxide (SnO2)
  • Adjustable sensitivity: Yes, via on-board potentiometer
  • Preheat time: approx. 20 s
  • Power consumption: <150 mA
  • Compatibility: Arduino, Raspberry Pi, ESP32/ESP8266, microcontrollers

Final note

The ALLNET 4duino MQ-3 is a reliable and versatile gas sensor module for alcohol detection and more, offering both analog and digital outputs for flexible project integration.

Specifications
Alarm mute
No
Battery low indication
No
Battery voltage
5 V
Best uses
Alcohol detection, air quality monitoring, safety systems
Brand
ALLNET
Built-in display
No
Category
Gas Detector
Connectivity technology
Wired
Detected gas types
Alcohol, Benzine, Hexane, LPG, CO
Detector type
Gas Detector
EAN
4038816070234
LED indicators
Yes
Model
ALL_OY_3327
MPN
ALL_OY_3327
Operating relative humidity (H-H)
0 - 95%
Operating temperature (T-T)
-10 - 50 °C
Power source type
DC
Quantity per pack
1
Price history over the last 6 months
ALLNET 4duino MQ-3 Alcohol Gas Sensor (ALL_OY_3327)
Current
R323
Lowest
R312
Highest
R323
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