MQ-135 Air Quality Control Gas Sensor Module

Overview

The MQ-135 Air Quality Control Gas Sensor Module is designed for detecting a variety of gases in the air and is particularly sensitive to ammonia, benzene, smoke, and other harmful gases. It utilizes the MQ series gas sensing technology, offering a cost-effective solution for monitoring air quality in homes, industrial settings, and environmental applications. This module is widely used in air purifiers, ventilation systems, and IoT devices where real-time gas detection and monitoring are crucial.

Key Features

• Gas Detection: Detects a wide range of gases including ammonia, benzene, smoke, and other harmful gases.
• High Sensitivity: Provides accurate readings with high sensitivity to target gases.
• Analog Output: Outputs analog voltage proportional to the concentration of gases detected.
• Digital Output: Includes a digital pin for threshold-based detection of gases.
• Adjustable Sensitivity: Features an onboard potentiometer for fine-tuning sensitivity levels.
• Fast Response Time: Quickly responds to changes in gas concentration for real-time monitoring.
• Stable and Reliable: Built-in heating element ensures stable operation over long periods.
• Low Power Consumption: Operates efficiently, suitable for continuous monitoring applications.
• Compact and Easy to Use: Compact design with standard pin headers for easy integration with microcontrollers.

Applications

• Indoor Air Quality Monitoring: Used in air purifiers and HVAC systems to monitor and improve indoor air quality.
• Industrial Safety: Monitors workplace environments for harmful gases, ensuring worker safety.
• Environmental Monitoring: Used in environmental research to measure air pollution levels.
• IoT Projects: Integrates with IoT devices for remote monitoring of air quality.
• Smart Home Applications: Provides real-time air quality data for smart home automation systems.

Technical Specifications

• Sensor Type: MQ-135 Gas Sensor
• Detection Range: Detects various gases including ammonia, benzene, smoke, and other harmful gases.
• Operating Voltage: 5V DC
• Output Types:
  • Analog output (0-5V) proportional to gas concentration
  • Digital output for threshold-based detection
• Heater Voltage: 5V AC or DC
• Preheat Time: Less than 2 minutes
• Dimensions: Typically around 32mm x 22mm x 20mm
• Operating Temperature: -10°C to 50°C
• Humidity Range: Less than 95% RH

Wiring and Connection

1. Connect the Sensor to Microcontroller:
   • VCC: Connect to 5V power supply.
   • GND: Connect to ground.
   • AO: Connect to an analog input pin for reading gas concentrations.
   • DO: Connect to a digital input pin for threshold-based gas detection.
2. Adjust Sensitivity:
   • Use the onboard potentiometer to set the desired threshold for digital output.
3. Code Integration:
   • Use analogRead() function for Arduino or equivalent for other platforms to read gas concentrations from the analog output.
   • Use digitalRead() to monitor the digital output for threshold-based alerts.

Why Choose Our MQ-135 Gas Sensor Module?

Our MQ-135 Gas Sensor Module offers reliable and accurate detection of various harmful gases, making it an essential component for air quality monitoring projects. With its high sensitivity, adjustable sensitivity levels, and ease of integration, this module provides valuable data for improving indoor and outdoor air quality, ensuring safety in industrial environments, and enabling smart environmental monitoring solutions.

Enhance your air quality monitoring projects with our MQ-135 Gas Sensor Module. Detect harmful gases with precision and reliability.