MQ-3 Gas Sensor Module

SKU: A000070

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 350

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20 in stock

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All Over Pakistan

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Description

MQ-3 Gas Sensor Module:

Overview:

  • Reliable and efficient gas sensor module
  • Designed for detecting alcohol in the air
  • Utilizes the MQ-3 sensor for excellent sensitivity

Specifications:

  • Model No.: MQ-3
  • Heater voltage: 5±0.2V (AC•DC)
  • Loop voltage: ≤24V (DC)
  • Load resistance: adjustable
  • Heating Resistance: 31Ω±3Ω (Room temperature)
  • Heating Power: ≤ 900mW
  • Surface thermal resistance: 2Kohm-20Kohm (0.4mg/L alcohol)
  • Sensitivity: Rs (in air)/Rs (0.4mg/L alcohol) ≥ 5
  • Working temperature: 20 degrees ±2 degree
  • Humidity: 65%±5%RH
  • Signal output light indicator
  • Analog and level signal output
  • TTL output valid signal is low
  • Carbon monoxide detection with better sensitivity
  • Long service life and reliable stability
  • Rapid response and recovery features

Features:

  • Simple to use gas sensor module
  • Provides analog output corresponding to gas concentration
  • Easy-to-use digital output with adjustable threshold
  • Onboard potentiometer for setting maximum gas concentration
  • LED indicator for gas presence
  • Wide power supply range: 2.5V to 5.0V
  • Compact and convenient dimension: 40.0mm x 21.0mm
  • Mounting holes for easy installation

Applications:

  • Car alcohol alarm systems
  • Breathalyzers
  • Air quality monitoring
  • Industrial safety applications
  • Environmental monitoring

How to Use:

  • MCU Interface:
    • VCC ↔ 2.5V ~ 5.0V
    • GND ↔ power supply ground
    • AOUT ↔ MCU.IO (analog output)
    • DOUT ↔ MCU.IO (digital output)

Note: The MQ-3 Gas Sensor Module is highly sensitive to alcohol and ethanol gases, making it suitable for various applications where accurate alcohol detection is required.

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