The SB-30-04 is a tin dioxide semiconductor gas sensor which has a high sensitivity to alcohol with quick response speed.
This model is suitable for alcohol detection such as portable breath alcohol checker or ignition locking system in automobles.
Gas sensitive semiconductor material is a mini bead type and a heater coil and electrode wire are embedded in the element.
The sensing element is installed in the metal housing which uses double stainless steel mesh (100 mesh) in the path of gas flow.
The mesh is an anti-explosion feature.