- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
The gas sensing material used by mQ-2 smoke sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of combustible gas concentration in the air. Using a simple circuit, the change of conductivity can be converted into an output signal corresponding to the gas concentration.
MQ-2 smoke sensor has high sensitivity to liquefied gas, propane, hydrogen and smoke, and is also ideal for the detection of natural gas and other combustible vapors. Therefore, MQ gas sensor can be accurately described as a variety of gas detectors. Its advantages include high sensitivity, fast response, good stability, long service life, simple driving circuit and high cost performance. There are two options of analog and digital signal output.
| Parameter type | Characteristics |
|---|---|
| Specification | 22×38mm |
| Positioning aperture | 3mm |
| Control signal | Analog signal/Digital signal |
| Working voltage | 3.3-5V |
| Interface | 4P |
| Line sequence | G V A D |
| Gas range | 100~10000ppm |
| Red indicator | On when there is a signal |
| Analog value output characteristics | Under the same supply voltage, the analog output increases with the concentration. If the supply voltage decreases, the analog output also decreases |
| Digital value output characteristics | When a valid signal is detected, the digital value outputs a low level |
| Sensitivity adjustment during digital value output | Clockwise sensitivity decreases and counterclockwise sensitivity increases |
The gas sensing material used by mQ-2 smoke sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of combustible gas concentration in the air. Using a simple circuit, the change of conductivity can be converted into an output signal corresponding to the gas concentration.
MQ-2 smoke sensor has high sensitivity to liquefied gas, propane, hydrogen and smoke, and is also ideal for the detection of natural gas and other combustible vapors. Therefore, MQ gas sensor can be accurately described as a variety of gas detectors. Its advantages include high sensitivity, fast response, good stability, long service life, simple driving circuit and high cost performance. There are two options of analog and digital signal output.
| Parameter type | Characteristics |
|---|---|
| Specification | 22×38mm |
| Positioning aperture | 3mm |
| Control signal | Analog signal/Digital signal |
| Working voltage | 3.3-5V |
| Interface | 4P |
| Line sequence | G V A D |
| Gas range | 100~10000ppm |
| Red indicator | On when there is a signal |
| Analog value output characteristics | Under the same supply voltage, the analog output increases with the concentration. If the supply voltage decreases, the analog output also decreases |
| Digital value output characteristics | When a valid signal is detected, the digital value outputs a low level |
| Sensitivity adjustment during digital value output | Clockwise sensitivity decreases and counterclockwise sensitivity increases |
