The MQ-135 Air Quality Sensor detects a range of harmful gases and pollutants (CO2, ammonia, benzene, smoke), making it the go-to sensor for air-quality monitors and smart-city FYPs.
Key Features
- Detects CO2, NH3, smoke, benzene
- Analog + digital output
- Adjustable sensitivity
- Good for AQI projects
- 5V heater
Specifications
| Detects | CO2/NH3/smoke/benzene |
| Output | Analog + Digital |
| Voltage | 5V |
| Comparator | LM393 |
Popular Project Ideas
- Air-quality monitor
- IoT pollution logger
- Indoor CO2 alert
- Smart-city FYP
In stock at Arduino Corner, Rawalpindi with quick delivery to Islamabad and all over Pakistan. Ideal for STEM students, robotics clubs and FYP teams — pay by cash on delivery or online.







