MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module Standard Quality

The MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module is a sensor designed to detect the presence of (CO), (CH4), and liquefied petroleum gas (LPG) in the air.

This MQ-9 CO, CH4, and LPG Gas Sensor Module can be used to sense (CO) and CH4 Gas. The sensitive material of the MQ9 gas sensor is SnO2, which with lower conductivity in clean air.

It makes detection by the method of cycle high and low temperature and detects CO when the low temperature (heated by 1.5V). The sensor’s conductivity is higher along with the gas concentration rising.

When a high temperature (heated by 5.0V), it detects CH4, Propane, etc. combustible gas and cleans the other gases adsorbed under low temperature.

Key features of the MQ-9 sensor module include:

1. Multiple Gas Detection: Capable of detecting the presence of (CO), CH4, and LPG gases simultaneously.
2. High Sensitivity: The sensor module is highly sensitive to the targeted gases, allowing for early detection even at low concentrations.
3. Analog Output: Provides analog output voltage proportional to the concentration of gases detected, making it compatible with various microcontrollers and data acquisition systems.
4. Compact Design: The module is typically compact, making it suitable for integration into various gas detection systems and portable devices.
5. Low Power Consumption: Designed for low power consumption, ensuring minimal energy usage during operation.
6. Wide Applications: Suitable for a wide range of applications including industrial safety, domestic gas leakage detection, environmental monitoring, and more.
7. Easy Integration: The module often comes with a standardized pinout and interface, facilitating easy integration into existing systems

In commercial buildings and public spaces, the sensor module is integrated into gas detection systems to monitor indoor air quality and detect harmful gases such as CO, CH4, and LPG, thereby enhancing occupant safety. Additionally, its application extends to vehicle safety, where it helps detect LPG leaks in vehicles using liquefied petroleum gas as fuel, contributing to accident prevention and vehicle safety standards.

Wire Connections

VCC – Positive pole (5V)
GND – Negative pole
DO – TTL switch signal output
AO – Analog signal output

Applications

1. The domestic gas leakage detector
2. Industrial gas detector
3. Portable gas detector

Features :

1. Good sensitivity to CO/Combustible Gas
2. High sensitivity to Methane, Propane, and CO
3. Long life and low cost
4. Simple drive circuit

Package Includes :

1 x MQ9 Carbon Monoxide, Methane, and LPG Gas Sensor Module