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MQ-4 Natural Gas Sensor Module For Methane(CNG) gas Detector Module
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Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features.

MQ-4 Natural Gas Sensor Module pin Diagram
MQ-4 Natural Gas Sensor Module pin description
| 1 | AO | Analog output (Sensor data output in analog form) |
| 2 | DO | Digital output (Sensor data output in digital form) |
| 3 | GND | To -ve of power supply |
| 4 | VCC | To +ve of power supply |
| Model | MQ4 Gas Sensor Module |
| IC Chip | LM393 |
| Operating Voltage | 3 ~ 5V (DC) |
| Detecting Range | 300ppm to 10000ppm |
| Dimensions | 3.1 x 1.9 x 2.1 cms |
| Weight | 5 grams |
| Model | MQ4 Gas Sensor Module |
| IC Chip | LM393 |
| Operating Voltage | 3 ~ 5V (DC) |
| Detecting Range | 300ppm to 10000ppm |
| Dimensions | 3.1 x 1.9 x 2.1 cms |
| Weight | 5 grams |