MQ-9 Carbon Monoxide and Flammable Gas Sensor Module
Prices updated: 12 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Makers ElectronicsCheapest | MQ-9 Carbon Monoxide, Combustible Gas Sensor Module | 80 EGP | View in store |
 Microohm | MQ-9 Carbon Monoxide Methane LPG Gas Sensor Module | 85 EGP100 | View in store |
 Future Electronics | Flammable Gas Sensor MQ9 (Analog/Digital) | 90 EGP | View in store |
| Circuits Electronics | Flammable Gas Sensor MQ9 (Analog/Digital) | 95 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 80 EGP
About this product
The MQ-9 module detects carbon monoxide (CO) and combustible gases such as methane and LPG, with high sensitivity to CO. It provides both digital and analog outputs and has an onboard potentiometer to adjust the digital trigger sensitivity. It operates from 5 V and is suited to low-cost gas monitoring and safety projects.
Specifications
- Operating Voltage
- 5 V
- Detected Gases
- Carbon Monoxide (CO), Methane, LPG, Propane
- Outputs
- Digital (DOUT) and Analog (AOUT)
- Sensitivity Adjustment
- Onboard potentiometer
- Pinout
- VCC, GND, DOUT, AOUT
Frequently asked questions
What is the price of MQ-9 Carbon Monoxide and Flammable Gas Sensor Module in Egypt?
MQ-9 Carbon Monoxide and Flammable Gas Sensor Module currently costs between 80 and 95 EGP across 4 offers in Egypt.
Where can I buy MQ-9 Carbon Monoxide and Flammable Gas Sensor Module in Egypt?
MQ-9 Carbon Monoxide and Flammable Gas Sensor Module is available from Makers Electronics, Microohm, Future Electronics, and Circuits Electronics. Compare the offers above to find the best price.
How do I set the digital alarm threshold?
Turn the onboard potentiometer while monitoring the DOUT pin. The digital output changes state when the gas level crosses the set threshold. Calibrate in clean air first, as recommended for MQ-series sensors.
Can it run on a 3.3 V microcontroller?
The module is specified for a 5 V supply, so power it from 5 V. If you connect AOUT to a 3.3 V board such as ESP32, use a voltage divider or level shifter to keep the ADC input within its limit.
