MQ-135 Air Quality Gas Sensor Module

🌿 MQ-135 Air Quality Gas Sensor Module – Comprehensive Overview

The MQ-135 is a versatile and cost-effective gas sensor module designed to detect a wide range of harmful gases, making it an excellent choice for air quality monitoring systems, smart home applications, and environmental sensing projects. This sensor is particularly sensitive to ammonia (NH₃), benzene (C₆H₆), alcohol, smoke, and carbon dioxide (CO₂), among other volatile organic compounds (VOCs).

🔍 Key Features

• Wide Detection Range: Capable of detecting gases such as ammonia, benzene, alcohol, smoke, and CO₂.

• Dual Output: Provides both analog and digital outputs for flexible integration.

• Adjustable Sensitivity: Features a built-in potentiometer to fine-tune the sensor's sensitivity.

• Preheating Requirement: Requires a warm-up time of approximately 20 seconds upon power-up for accurate readings.

• Low Power Consumption: Operates at 5V with a current consumption of around 150mA.

• Long Lifespan: Designed for extended use with proper calibration.

⚙️ Technical Specifications

🛠️ Applications

• Air Quality Monitoring Systems: Ideal for detecting pollutants in indoor and outdoor environments.

• Smart Home Automation: Integrate with IoT platforms for real-time air quality monitoring.

• Industrial Safety: Monitor hazardous gas levels in industrial settings.

• Environmental Research: Collect data for environmental studies and pollution tracking.

🔌 Wiring Guide for Arduino Integration

1. VCC → 5V (Arduino)

2. GND → GND (Arduino)

3. A0 (Analog Output) → A0 (Arduino)

4. D0 (Digital Output) → Digital Pin (e.g., D2 on Arduino)

📚 Resources & Tutorials

• Datasheet: MQ-135 Sensor Datasheet

• Tutorial: Using MQ-135 with Arduino

• Video Guide: MQ-135 Gas Sensor Module Tutorial