MQ-3 Alcohol Ethanol Gas Detection Module for Arduino
Price in Sri Lanka
Gas SensorsMeasurement ModulesMQ
Tronic.lk
Rs 390
In stock
Updated 01 Nov 2026
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Description
| Pin Name | Description |
| VCC | This pin powers the module, typically the operating voltage is +5V |
| GND | Used to connect the module to system ground |
| Digital Out (DO) | You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer |
| Analog Out (AO) | This pin outputs 0-5V analog voltage based on the intensity of the gas |
Features of MQ-3 Alcohol Sensor
- Sensor Type - Semiconductor
- Easy SIP header interface
- Compatible with most of the microcontrollers
- Low-power standby mode
- Requires heater voltage
- Good sensitivity to alcohol gas
- Fast response and High sensitivity
- Long life and low cost
- Requires simple Drive circuit
Specifications of MQ-3 Gas Sensor
- Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
- Current Consumption: 150mA
- DO output: TTL digital 0 and 1 ( 0.1 and 5V)
- AO output: 0.1- 0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V
- Detecting Concentration: 0.05-10mg/L Alcohol
- Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
- Heater consumption: less than 750mW
- Operating temperature: 14 to 122 °F (-10 to 50°C)
- Load resistance: 200kΩ
- Sensitivity S: Rs(in air)/Rs(0.4mg/L Alcohol)≥5
- Sensing Resistance Rs: 2KΩ-20KΩ(in 0.4mg/l alcohol)
- Dimensions: 32 x 22 x 16 mm
Frequently asked questions
What is the price of MQ-3 Alcohol Ethanol Gas Detection Module for Arduino in Sri Lanka?▾
The current price of MQ-3 Alcohol Ethanol Gas Detection Module for Arduino in Sri Lanka is Rs 390 at Tronic.lk.
Is MQ-3 Alcohol Ethanol Gas Detection Module for Arduino available in Sri Lanka?▾
Yes, MQ-3 Alcohol Ethanol Gas Detection Module for Arduino is currently in stock at Tronic.lk in Sri Lanka.
Where can I buy MQ-3 Alcohol Ethanol Gas Detection Module for Arduino in Sri Lanka?▾
You can buy MQ-3 Alcohol Ethanol Gas Detection Module for Arduino in Sri Lanka at Tronic.lk. Visit 37left.lk to compare prices across multiple shops and find the best deal.
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