MQ3 Alcohol Sensor Module

Specification

• Sensitivity: 0.05 to 10 mg/L of alcohol
• Operating voltage: 5V DC
• Power consumption: 800mW
• Load resistance: adjustable from 1 to 10 kΩ
• Heater resistance: 33Ω ± 5%
• Heater current: 150mA ± 20mA
  
• Operating temperature: -10°C to +50°C
  
• Dimensions: 32mm x 22mm x 27mm

The MQ3 Gas Sensor is a highly sensitive alcohol detection module commonly used in breathalyzers, alcohol testers, and safety monitoring systems. It efficiently detects alcohol vapors in the air with excellent accuracy and a rapid response time. Designed for long-term use, the sensor offers high stability, making it ideal for continuous monitoring applications.

Key Features:

• High Sensitivity – Accurately detects alcohol vapors with minimal interference.
• Fast Response Time – Delivers instant readings for real-time alcohol detection.
• Easy Integration – Simple circuit design ensures seamless compatibility with various devices.