Table 1.
Characteristics of four sensors selected in our experiment.
| Sensor | Target Analyte | Price (USD) |
|---|---|---|
| TGS2600 | Hydrogen, Carbon mon-oxide | 2.8 |
| TGS2602 | Ammonia, Hydrogen sulfide | 3.1 |
| TGS2620 | Alcohol, Solvent vapors | 3.4 |
| TGS2611 | Methane Natural Gas | 3.0 |
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