MQ3 MQ-3 Gas Sensor Module

MQ-3 Alcohol Gas Sensor Module Price in Pakistan

The MQ-3 alcohol gas sensor module is designed for alcohol-vapour detection experiments and provides an analog output plus an adjustable digital threshold output. It is commonly paired with Arduino and other microcontrollers for educational sensing, data logging and alarm prototypes.

When comparing an MQ-3 alcohol sensor price in Pakistan, include warm-up, calibration and environmental conditions in your project plan. The onboard potentiometer adjusts the digital trigger threshold, while the analog output is used for relative measurements. This module is not a certified breathalyser or safety instrument and should not be used for legal, medical or enforcement decisions.

Key features

• MQ-3 alcohol-vapour sensing element
• 5V module supply
• Analog output for relative concentration readings
• Digital output with adjustable trigger threshold
• Power and status indicators on common module versions
• Compatible with Arduino and other microcontroller inputs

Setup notes

Allow adequate preheating, establish a baseline in clean air and calibrate for the intended environment. Gas sensors can respond to more than one vapour, so readings should be treated as indicative rather than laboratory-selective measurements.

Browse more gas sensor modules at Robonation Pakistan. For setup limits and technical guidance, review the official Winsen MQ-3B reference.