MQ‑135 Gas Sensor – Air Quality & Harmful Gas Detection Module
Reliable Sensor for Pollution Monitoring, IoT Safety & DIY Electronics Projects
৳165.00৳152.00
Product Description
The MQ‑135 Gas Sensor is a versatile and affordable sensor module designed to measure air quality and detect harmful gases such as ammonia, benzene, carbon dioxide (CO₂), smoke, and other pollutants. Built with a sensitive SnO₂ (tin dioxide) layer, the sensor changes resistance when exposed to target gases, making it ideal for pollution monitoring systems, smart home devices, and IoT safety projects. With high sensitivity, fast response time, and simple analog/digital outputs, the MQ‑135 is widely used in Arduino, Raspberry Pi, and microcontroller applications for both hobby and professional use.
Key Features
Wide gas detection – detects ammonia, benzene, CO₂, smoke, and other harmful gases
Air quality monitoring – suitable for pollution detection systems
High sensitivity – quick response to changes in gas concentration
Dual output – analog and digital signals for flexible interfacing
Operating voltage: 5V DC, compatible with Arduino and Raspberry Pi
Compact design – easy PCB mounting and integration
Applications – air quality monitoring, pollution detection, IoT safety systems, smart home devices
Affordable component – ideal for students, hobbyists, and engineers
