Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 5V DC |
| Interface Type | Analog Output (AO) & Digital Output (DO) |
| Preheat Time | 24-48 Hours |
| Detection Range | 300-10000 ppm (varies by model) |
| Operating Temperature | -10°C to 50°C |
| PCB Dimensions | 32mm x 20mm x 14mm |
| Indicator LED | Power & Digital Trigger Indicators |
| Comparator Chip | LM393 |
| Sensitivity Adjustment | Adjustable via Potentiometer |
| Package Content | 1x Sensor Module, 3x Pin Headers |
Anonymous
Mar 08, 2026
Rating: 4/5
Good value
Solid build quality for the price. Needs proper calibration time though, do not expect instant accuracy.
Anonymous
Feb 25, 2026
Rating: 4/5
Consistent performance
Bought 10 units, all working. One needed potentiometer tweak to match the others but overall satisfied.
Anonymous
Feb 13, 2026
Rating: 5/5
Detected smoke reliably
Used for a prototype alarm system. Very sensitive to cigarette smoke and lighter fluid during testing.
Anonymous
Feb 11, 2026
Rating: 5/5
Perfect for learning
Helped me understand gas sensing for my thesis. Documentation online is plentiful for these modules.
Anonymous
Feb 08, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with my Uno. Easy to wire up and the analog readings are stable after preheating.
Q: What is the power consumption?
A: Approximately 150mA during the heating phase. Ensure your power supply can handle the current spike.
Q: How long does calibration take?
A: We recommend 24-48 hours of continuous power for stable baseline readings before deployment.
Q: Can this detect natural gas leaks?
A: MQ-2 detects combustible gases, but this module is not certified for life-safety alarms or building code compliance.
Q: Is this compatible with Raspberry Pi?
A: Yes, but requires an external ADC since the Pi lacks analog inputs. The digital output works directly.
Q: Does it come with headers?
A: Yes, standard 3-pin headers are included in the package for easy breadboard integration.
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