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Description
Features :
| CATEGORY | SPECIFICATIONS |
|---|---|
| Product Type | Combustible Gas Sensor Module |
| Model / Sensor Type | MQ-5 (SnO₂ gas sensing element) |
| Detection Gases | LPG, Methane (CH₄), Propane, Coal gas, Natural gas |
| Detection Principle | Tin dioxide (SnO₂) conductivity change based on gas concentration |
| Detection Range | 300 – 10,000 ppm |
| Operating Voltage | DC 5 V |
| Power Consumption | ~150 mA (heater included) |
| Output Types | Digital (DO) + Analog (AO) |
| Digital Output (DO) | TTL signal (0 or 1), LOW when gas detected |
| Analog Output (AO) | 0.1 V – ~4.0 V depending on gas concentration |
| Sensitivity | High sensitivity to LPG, methane, propane |
| Interference Resistance | Resistant to alcohol and smoke interference |
| Response Characteristics | Fast response and recovery |
| Warm-up Time | ~20 seconds initial stabilization (heater required) |
| Operating Principle | Gas concentration ↑ → sensor conductivity ↑ → output voltage changes |
| Physical Size | 32 mm × 20 mm × 22 mm |
| Build Features | Power LED + signal indicator LED |
| Mounting | 4 screw holes for installation |
| Key Components | SnO₂ sensing layer + internal heater coil |
| Controller Chip Mentioned | AT89S52 (module integration reference) |
| Communication (if used system-level) | UART 9600 baud (contextual mention) |
| Key Advantages | Low cost, stable performance, dual output, easy MCU integration |
| Applications | Home gas leakage detection, industrial gas monitoring, LPG alarms, safety systems |
| Special Notes | Sensor heating is normal; must preheat before accurate readings |
Package Includes:
1 x MQ-5 Gas Sensor Module
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