
Sensor
MQ9 Gas Sensor
The MQ-9 Gas Sensor Module is a versatile metal oxide semiconductor sensor highly sensitive to Carbon Monoxide (CO), Methane (CH4), and LPG. Ideal for gas leakage detection and air quality monitoring projects.
₹172.00
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₹172.00
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About MQ9 Gas Sensor
The MQ-9 Gas Sensor Module is a compact and cost-effective semiconductor sensor specifically designed for detecting Carbon Monoxide (CO), Methane (CH4), and Liquefied Petroleum Gas (LPG). It utilizes a sensitive layer of SnO2 (Tin Dioxide) which offers excellent stability and a long service life. The module features both digital and analog output options, making it compatible with a wide range of microcontrollers including Arduino, ESP32, and Raspberry Pi. Key features include high sensitivity to combustible gases and a simple interface requiring a 5V operating voltage. This sensor is widely used in home safety systems, gas leak detectors, industrial safety equipment, and air quality monitoring stations. Choose the MQ-9 for reliable detection of dangerous gases in your DIY electronics or professional projects.
Technical Specifications
| Operating Voltage | 5V DC |
|---|---|
| Heater Voltage | 5V AC or DC |
| Heater Consumption | ≤350mW |
| Operating Temperature | -20°C to 50°C |
| Sensor Type | Metal Oxide Semiconductor (SnO2) |
| Sensitive Gases | Carbon Monoxide (CO), Methane (CH4), LPG |
| Output | Analog (0-5V) and Digital (TTL) via comparator |
| Dimensions | Approx. 32mm x 20mm x 22mm |
| Preheat Time | >24 hours for best stability |
| Load Resistance | Adjustable (RL) |
Alternative Components
MQ-2 Gas Sensor
MQ-135 Gas Sensor
MQ-5 Gas Sensor
MQ-7 Carbon Monoxide Sensor









