MQ-135 Air Quality Gas Sensor Module (Analog and Digital Output)
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Makers ElectronicsCheapest | MQ-135 Air Quality Gas Sensor Module | 75 EGP | View in store |
 RAM Electronics | MQ-135 Sensor Air Quality Sensor Hazardous Gas Detection Module | 75 EGP | View in store |
 Microohm | MQ 135 Air Quality/Gas Detector Sensor Module For Arduino | 80 EGP100 | View in store |
 Future Electronics | Air Quality Sensor MQ135 (Analog/Digital) | 90 EGP | View in store |
 Most Electronics | MQ-135 (Air Quality Hazardous Gas Sensor) Module | 91.9 EGP113 | View in store |
 Ekostra | MQ-135 Air Quality Gas Sensor Module | 100 EGP | View in store |
 Circuits Electronics | Air Quality Sensor MQ135 (Analog/Digital) | 100 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 75 EGP
About this product
The MQ-135 is a metal-oxide gas sensor module that responds to changes in air quality caused by gases such as ammonia, alcohol, benzene, and smoke. The module provides an analog output for reading gas level and a digital output for threshold alarms, making it suitable for air quality monitoring, gas leak alerts, and smart home projects.
Specifications
- Output
- Analog (AO) and digital (DO)
- Operating voltage
- 5V DC
- Sensing element
- Metal oxide semiconductor (SnO2)
- Target gases
- Ammonia, alcohol, benzene, smoke
- Measurement type
- Relative concentration, not calibrated ppm
Frequently asked questions
What is the price of MQ-135 Air Quality Gas Sensor Module (Analog and Digital Output) in Egypt?
MQ-135 Air Quality Gas Sensor Module (Analog and Digital Output) currently costs between 75 and 100 EGP across 7 offers in Egypt.
Where can I buy MQ-135 Air Quality Gas Sensor Module (Analog and Digital Output) in Egypt?
MQ-135 Air Quality Gas Sensor Module (Analog and Digital Output) is available from Makers Electronics, RAM Electronics, Microohm, Future Electronics, Most Electronics, Ekostra, and Circuits Electronics. Compare the offers above to find the best price.
How do I connect the MQ-135 to an Arduino?
Connect VCC to 5V and GND to GND, then connect AO to an analog input such as A0 for level readings. Optionally connect DO to a digital pin for threshold alarms. Allow a warm-up period before trusting the readings.
Can it give exact ppm values?
No. The MQ-135 is best for relative changes and threshold detection. Estimating ppm requires calibration in known clean air and comparison against a reference gas instrument.
