MQ-3 Alcohol Gas Sensor DIY Alarm Kit
Prices updated: 12 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | DIY Kit MQ-3 Sensor Alcohol Detector | 125 EGP | View in store |
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Lowest price recorded: 125 EGP
About this product
This DIY kit builds an alcohol vapor alarm circuit around the MQ-3 gas sensor, whose conductivity changes with alcohol vapor concentration. A fixed resistor forms a voltage divider with the sensor so the alcohol level can be judged. It runs from 5 to 7.5 V DC and includes a power switch and power LED, suited to learning and gas-detection projects.
Specifications
- Sensor
- MQ-3 alcohol gas sensor
- Working voltage
- 5 V to 7.5 V DC
- Power switch
- S1
- Power indicator
- LED D1 with resistor R1
Frequently asked questions
What is the price of MQ-3 Alcohol Gas Sensor DIY Alarm Kit in Egypt?
MQ-3 Alcohol Gas Sensor DIY Alarm Kit currently costs 125 EGP in Egypt.
Where can I buy MQ-3 Alcohol Gas Sensor DIY Alarm Kit in Egypt?
MQ-3 Alcohol Gas Sensor DIY Alarm Kit is available from Makers Electronics. Compare the offers above to find the best price.
Does the MQ-3 need a warm-up time?
Yes. The sensor has an internal heater and needs a warm-up period after power-on before its readings stabilize. Wait a few minutes before testing.
Can it be used as a breathalyzer?
No. MQ-3 readings depend on temperature, humidity and other gases. The kit is intended for alarm and learning projects, not for accurate or legal breath-alcohol measurement.
