Specifications
| Category | Specification |
|---|
| Product Name | Alcohol Sensor (MQ-3) |
| Model | OKYN241028-4 |
| Brand | OEM |
| Sensor Type | Semiconductor gas sensor |
| Target Gas | Alcohol / Ethanol vapors |
| Sensing Material | Tin dioxide (SnO₂) semiconductor |
| Operating Voltage | 5 V DC |
| Power Consumption | ~150 mA (typical) |
| Detection Range | ~25–500 ppm (typical range for alcohol) |
| Output Type | Analog resistance/voltage (may have analog & digital on module) |
| Interface | Analog / digital (if module breakout included) |
| Heater Voltage | 5 V ±0.1 V (internal) |
| Heater Resistance | ~31 Ω (internal) |
| Operating Temperature | ~−10 °C to +70 °C |
| Operating Humidity | ≤ 95% RH (non-condensing) |
| Response / Recovery | Fast (typical for MQ sensors) |
| Application | Breath alcohol detection, air quality sensing, DIY projects |
| Mounting / Form | Through-hole sensor (module form typically) |