MQ-3 Alcohol Sensor Module | Breathalyzer & Ethanol Detector
₵32.00 Original price was: ₵32.00.₵28.00Current price is: ₵28.00.
Build your own Breathalyzer. The MQ-3 is specifically designed to detect alcohol (Ethanol) vapors. It has high sensitivity and fast response time, making it the perfect sensor for “Smart Car” safety systems that prevent drunk driving.
-
Detects: Alcohol, Ethanol, Benzine.
-
Sensitivity: Adjustable via Blue Potentiometer.
-
Warm-up: Heater requires ~20 seconds.
-
Best For: Breathalyzers, Drunk Driving Alarms, and Industrial Monitoring.
2 in stock
The MQ-3 Alcohol Ethanol Detection Sensor is a high-precision gas sensor designed to detect alcohol vapors, ethanol, and gasoline fumes. Ideal for breathalyzers, industrial monitoring, and smart IoT applications, this sensor helps measure alcohol concentration in the air and is widely used for vehicle safety, DUI prevention, and air quality control.
🔹 Dual Output & Adjustable Sensitivity for Easy Integration ⚡
✔ Gas Detection: Alcohol, ethanol, benzene, smoke, and gasoline vapors.
✔ Dual Output: Analog (exact concentration levels) & Digital (threshold-based alerts).
✔ Adjustable Sensitivity: Built-in potentiometer for threshold tuning.
✔ Operating Voltage: 5V DC (Compatible with Arduino & Raspberry Pi).
✔ Preheat Time: 20 seconds for stable and accurate readings.
✔ Durable & Compact Design: Long-lasting sensor with quick response time.
🔹 Applications – Where to Use the MQ-3 Sensor 🛠️
✔ Breath Alcohol Detection – Build your own DIY breathalyzer.
✔ Smart Vehicle Safety – Detect alcohol levels for DUI prevention.
✔ Workplace & Industrial Safety – Monitor alcohol exposure in factories.
✔ Air Quality Monitoring – Measure ethanol and gasoline vapors in enclosed spaces.
✔ Smart Home Automation – Integrate with IoT safety and security systems.
🔹 How to Use & External Resources 📚
The MQ-3 sensor is easy to connect with Arduino, Raspberry Pi, ESP8266, and other microcontrollers. Simply power it with 5V, connect the analog or digital output, and start measuring alcohol levels.
📖 Helpful Resources for MQ-3 Alcohol Ethanol Detection Sensor:
✔ MQ-3 Datasheet & Specifications
✔ How to Interface MQ-3 with Arduino
✔ Raspberry Pi Alcohol Sensor Guide
✔ YouTube Tutorials – MQ-3 Alcohol Sensor Projects
🔹 Best Price & Availability in Ghana 🇬🇭
Looking for an MQ-3 Alcohol Ethanol Detection Sensor in Ghana? Whether for breathalyzers, industrial alcohol detection, or air quality monitoring, this sensor offers high accuracy and easy integration. Order today for fast delivery across Ghana!
Related products
20×4 LCD Display Module (Blue Backlight) | 2004A Character Screen
-
Size: 20 Characters x 4 Lines.
-
Display: White Text on Blue Background.
-
Controller: HD44780 (Standard Industry Chip).
- Best For: Weather Stations, 3D Printers, and Advanced Menus.
433MHz RF Transmitter & Receiver Kit | Wireless Module for Arduino
Cut the cord. Go wireless. This kit includes one Transmitter and one Receiver. It is the simplest and most affordable way to send data wirelessly between two Arduinos up to 100 meters (with antenna).
-
Frequency: 433MHz
-
Includes: 1x Transmitter (Square), 1x Receiver (Rectangle)
-
Modulation: ASK (Amplitude Shift Keying)
-
Best For: Remote control cars, weather stations, and wireless switches.
BMP180 Digital Barometric Pressure & Altitude Sensor Module
Predict the weather or measure your altitude. The BMP180 is a high-precision sensor that measures air pressure and temperature. Because pressure changes with height, it also works as an incredibly accurate altimeter (±1 meter accuracy).
-
Measures: Pressure (Pa) & Temperature (C)
-
Interface: I2C (SDA/SCL)
-
Voltage: 3.3V to 5V Compatible
-
Best For: Weather stations, Drones, and GPS altitude correction.
HC-SR04 Ultrasonic Sensor Module | Distance Measurement for Arduino
Give your robot eyes. The HC-SR04 uses sonar (sound waves) to measure distance, just like a bat. It is the standard sensor for obstacle avoidance robots and water level monitoring systems.
-
Range: 2cm to 400cm (4 Meters)
-
Accuracy: 3mm
-
Pins: VCC, Trig, Echo, GND
-
Best For: Obstacle avoiding cars, reverse parking sensors, and tank level detection.
High Sensitivity Vibration Sensor Module (SW-1801P) | Shock & Shake Switch
Detect even the slightest tap. Unlike standard vibration sensors that require a hard shake, the SW-1801P High Sensitivity module can detect light knocks, impacts, and vibrations. Perfect for anti-theft alarms and "Smart Wake-Up" devices.
-
Sensor Type: SW-1801P (High Sensitivity Spring).
-
Output: Digital (High/Low).
-
Adjustable: Blue Potentiometer to set sensitivity trigger.
-
Best For: Anti-Theft Alarms, Earthquake Detection, and Smart Toys.
NEO-6M GPS Module V2 with Ceramic Antenna | Flight Controller & Tracker
-
Chipset: U-Blox NEO-6M.
-
Antenna: High-gain Active Ceramic Antenna (Included).
-
Data Retention: EEPROM + Battery (Saves configuration).
-
Best For: Drone Flight Controllers, Vehicle Trackers, and Speedometers.
Soil Moisture Sensor Module (YL-69) | Automatic Plant Watering System
Never forget to water your plants again. The Soil Moisture sensor measures the water content in soil. When the soil gets dry, the sensor output changes, allowing your Arduino to turn on a water pump automatically.
-
Outputs: Analog (Exact moisture level) & Digital (Threshold switch)
-
Adjustable: Set your "Dry" trigger point with the blue potentiometer.
-
Ideal For: Smart irrigation systems, greenhouse monitoring, and science projects.
Sound Sensor Module (Microphone) | Clap Switch & Alarm Detector
Turn on lights with a clap! This microphone module detects sound waves and converts them into a digital signal for your Arduino. It is the core component for "Clap Switch" projects and noise-activated alarms.
-
Sensitivity: Adjustable via Blue Potentiometer.
-
Outputs: Digital (Gate) and Analog (Waveform).
-
Microphone: High-Sensitivity Condenser Mic.
-
Best For: Clap Switches, Baby Monitors, and Noise Alarms.

Reviews
There are no reviews yet.