Description :
The MQ-4 Gas Sensor Module is a reliable and easy-to-use solution for detecting Compressed Natural Gas (CNG), Methane (CH₄), and other combustible gases in the air. Designed for both beginners and professionals, this module simplifies gas detection by offering a standard interface and stable performance for a wide range of applications.
The module features both analog and digital outputs, allowing flexible integration with microcontrollers such as Arduino, Raspberry Pi, and other IoT platforms. The analog output provides a continuous signal proportional to the gas concentration, while the digital output can be configured using the onboard potentiometer to trigger at a specific gas level.
With a detection range of 200 to 10,000 ppm, the MQ-4 sensor ensures accurate monitoring of natural gas levels. The onboard LED indicator provides a visual alert when gas is detected, making it suitable for safety and monitoring systems.
This sensor works on the principle of conductivity change in a gas-sensitive material (SnO₂). In clean air, the conductivity is low, but when methane or other gases are present, the conductivity increases, producing a corresponding output signal.
Specifications :
| Specification | Details |
|---|---|
| Model | MQ-4 Gas Sensor Module |
| IC Chip | LM393 |
| Operating Voltage | 3 ~ 5V DC |
| Detecting Range | 300 ppm to 10,000 ppm |
| Dimensions | 3.1 × 1.9 × 2.1 cm |
| Weight | 5 grams |
Features :
- Signal Output Indicator – Onboard LED indicator for quick visual detection of gas presence
- Dual Output Support – Provides both Analog Output and Digital (TTL) Output for flexible usage
- TTL Digital Output – Low-level digital signal, easily connects directly with microcontrollers (SCM)
- High Sensitivity – Accurate detection of Methane (CH₄) and CNG gases
- Stable & Reliable Performance – Designed for consistent long-term operation
- Long Working Life – Durable sensor suitable for continuous monitoring applications
- Fast Response & Recovery – Quickly detects gas presence and returns to normal state efficiently
Package Included :
1X MQ-4 Natural Gas Sensor Module for Methane (CNG) Detection
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