Detcon manufactures fixed gas detection sensors for a wide range of industrial applications. The Model 700 is an intelligent sensor specifically designed for harsh environments. Models 500/600 feature Detcon's MicroSafe intuitive software. The Model 100 are high quality, low power, no frills gas sensors.

Pemtech is a manufacturer of gas sensors, including hydrogen sulfide, combustible, toxic, oxygen and CO2 gas sensors. Other products include monitors and controllers, wireless gas detection, process analyzers and calibration accessories.

Applied Nanotech Holdings is a manufacturer of gas sensors. Their Metal Nanoparticle sensors are palladium nanoparticle-based hydrogen sensors. Their Sono Photonic gas sensors can detect trace amounts of most gases and vapors.