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Description
Features:
Package Includes:
1 x MQ-2 gas sensor module
| CATEGORY | SPECIFICATIONS |
|---|---|
| Product Type | Combustible Gas & Smoke Sensor Module |
| Model / Sensor Type | MQ-2 (ZYMQ-2 sensing element) |
| Detection Gases | LPG, Propane, Methane, Hydrogen, Smoke |
| Operating Principle | Tin dioxide (SnO₂) conductivity increases with gas concentration |
| Operating Voltage | DC 5 V |
| Power Consumption | ~150 mA (heater required) |
| Output Types | Analog (AO) + Digital (DO / TTL) |
| Digital Output (DO) | TTL signal (LOW when gas detected, HIGH otherwise) |
| Analog Output (AO) | 0.1–0.3 V baseline, up to ~4 V at high gas concentration |
| Signal Behavior | Gas concentration ↑ → output voltage ↑ |
| Comparator Chip | LM393 |
| Sensitivity | High sensitivity to smoke and flammable gases |
| Response Characteristics | Fast response and recovery |
| Warm-up Time | ~20 seconds (required for stable readings) |
| Indicator System | Power LED + digital signal indicator LED |
| Physical Size | 32 mm × 22 mm × 27 mm |
| Mounting Features | 4 screw holes for easy installation |
| Stability | Long service life and reliable performance |
| Special Features | Dual output (AO + DO), adjustable threshold via onboard comparator |
| Applications | Smoke detectors, gas leakage alarms, fire detection systems, home and industrial safety monitoring |
Package Includes:
1 x MQ-2 gas sensor module
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