MQ-135 Air Quality & Harmful Gas Detector Sensor Module

MQ-135 Air Quality & Harmful Gas Detector Sensor Module

The MQ-135 gas sensor module detects a broad range of harmful and combustible gases, with especially high sensitivity to ammonia, sulphide, and benzene vapors, along with general sensitivity to smoke. It outputs both a digital signal (threshold set via the onboard potentiometer) and an analog voltage that rises with gas concentration, making it a flexible option for air-quality monitoring projects.

Features

• High sensitivity to ammonia, sulphide, and benzene vapor
• Also sensitive to smoke and other harmful gases
• Digital output (TTL) plus analog 0-5V output
• Adjustable detection threshold via onboard potentiometer
• Fast response and recovery time

Applications

• Indoor air-quality monitoring
• Harmful gas / smoke detection projects
• Arduino and Raspberry Pi environmental sensing
• Industrial and consumer gas-leak alert systems

Package Includes

• 1 x MQ-135 Air Quality Detector Sensor Module

Note: Product images are for illustration purposes only. Actual product may vary slightly in appearance.