MQ- 4 Gas Sensor### MQ-4 Gas Sensor Overview

1. **Detection Capability**: Designed to detect methane (CH4) and other natural gases, providing a measurement of gas concentration in the air.

2. **Technology**: Utilizes a sensitive semiconductor layer that changes resistance in the presence of methane gas, producing an analog voltage output proportional to the gas concentration.

3. **Applications**: Ideal for gas leak detection, environmental monitoring, and safety systems in homes and industries.

### Typical Uses:

- **Gas Leak Detection**: Monitors for methane leaks in residential and industrial gas systems to prevent hazards.

- **Environmental Monitoring**: Measures methane levels in various environments, contributing to air quality assessments and studies.

- **Safety Systems**: Integrates into alarm systems to provide early warning of dangerous gas concentrations.