Alcohol Detector Alarm DIY Electronic Project Kit


In Stock


Safe Payment

Pay with the world’s most secure payment methods.


Payment Protection covers your purchase.

Worldwide Delivery

Ship to over 200 countries & regions.

The MQ-3 based Breathalyzer/Alcohol Detection circuit is used to check the alcohol concentration in your breath. Take a drink, breath into the orange sensor and the buzzer will go off. A fairly easy to build project and great for anyone interested in understanding electronic sensors.

Build Difficulty Level: Beginner
Build Time: 10-20 minutes
Build Instructions: The component values are printed directly on the PCB for easy reference and installation.
Input Voltage: 5-7V DC
Circuit Size: 6.2*3.6cm

Post Build Instructions:
1. Connect to Power source and turn on the switch
2. Wait 5-10 minutes for the orange sensor to heat up
3. Use the trimmer pot to increase or decrease the concentration threshold  
4. breath into the sensor




Shipping Disclaimer
We believe that a good shipping experience is what makes our customers return. We want you to be happy and satisfied with your purchase at Circuit-Pop. We have 24 hour customer service should you have any inquires regarding your purchases, please contact us at Shipping times can take from 2-4 weeks to be delivered, and we have tracking services so you can follow your purchase right to your door!



Added to cart successfully!