MQ-3 Alcohol ethanol sensor
$3.001pcs
The ADIY MQ3 is a low-cost alcohol sensor that detects alcohol vapors via conductivity changes in a SnO₂ sensing element, providing fast, sensitive analog and digital outputs for microcontroller-based breath alcohol detection.
| Dimensions | 35.5 × 23.5 × 23 mm |
|---|---|
| Brand |
easyelecmodule |
4166 in stock
MQ-3 Alcohol Ethanol Sensor
Description
The ADIY MQ3 Alcohol Sensor Module utilizes the MQ3 alcohol gas sensor, a low-cost semiconductor device capable of detecting alcohol concentrations ranging from 0.05 mg/L to 10 mg/L. The sensing element is tin dioxide (SnO₂), which exhibits low conductivity in clean air and increased conductivity when exposed to alcohol vapors. The sensor offers high sensitivity to alcohol while maintaining strong resistance to interference from smoke, vapor, and gasoline. It outputs both digital and analog signals, making it easy to interface with microcontrollers such as Arduino or Raspberry Pi.
This sensor is ideal for breath alcohol detection applications, similar to a breathalyzer. It delivers fast response and high sensitivity, with an analog output that varies according to the detected alcohol concentration.
Features
| FEATURE | DESCRIPTION |
|---|---|
| 5V Operation | Operates on 5V DC supply |
| LEDs for Output and Power | Includes LED indicators for output status and power |
| Output Sensitivity Adjustable | Sensitivity can be adjusted using the onboard potentiometer |
| Analog Output 0V to 5V | Provides analog voltage proportional to alcohol concentration |
| Digital Output 0V or 5V | Digital threshold output (LOW/HIGH) when gas level exceeds limit |
| Low Cost | Affordable sensor module |
| Fast Response | Quick detection and output response |
| Stable and Long Life | Durable sensor design with long operational lifespan |
| Good Sensitivity to Alcohol Gas | High sensitivity specifically for ethanol and alcohol vapor |
| Both Digital and Analog Outputs | Supports dual-output modes for flexible project integration |
| SPECIFICATIONS | MQ3 ALCOHOL SENSOR MODULE |
|---|---|
| Concentration | 0.05 mg/L ~ 10 mg/L Alcohol |
| Operating Voltage | 5V ±0.1 |
| Current Consumption | 150mA |
| Operation Temperature | -10°C ~ 70°C |
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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