MQ-135 AIR QUALITY

🔹 MQ-135 Air Quality Sensor Module – Harmful Gas Detector (Benzene, Alcohol, Smoke)

The MQ-135 is a high-sensitivity semiconductor sensor module designed for detecting a wide range of harmful gases and air pollutants, including benzene, alcohol, smoke, CO2, and ammonia. Ideal for air quality monitoring systems, this module provides both analog and digital outputs, making it perfect for environmental sensing projects with Arduino and other microcontrollers.

✅ Specifications:

• Sensor Type: MQ-135 Metal Oxide Semiconductor (MOS)

• Operating Voltage: 5V DC

• Preheat Duration: ~20-30 minutes for stable readings

• Output Signal: Analog (0-5V) & Digital (TTL)

• Detectable Gases: Benzene, Alcohol, Smoke, CO₂, Ammonia, Sulfide, and other harmful gases

• Board Dimensions: 32 x 20 mm (approx.)

• Interface: 4-pin header (VCC, GND, Digital Out, Analog Out)

• On-board Components: Sensitivity adjustment potentiometer, Power & TTL output LEDs

📦 Applications:
✔️ Indoor & Outdoor Air Quality Monitors
✔️ Benzene & Alcohol Vapor Detection
✔️ Smoke & Combustible Gas Detection Systems
✔️ Environmental Pollution Monitoring Projects
✔️ Smart Home Air Quality Control
✔️ Arduino & Raspberry Pi Environmental Sensing
✔️ Industrial Air Safety Prototypes