ELT SENSOR CORP patented NDIR core technologies are fabricated into various air-quality monitors and transmitters with high accuracy and long term stability to detect the IAQ HVAC, Agricultural, Industrial combustible gases such as CO2, CO, C2H2, CxHy, and more. ELT chemical sensors are operating at mission-critical sites to protect workers from toxic & corrosive gases (H2S, SO2, NO2, Cl2, CO, NH3, O2, and others) used in semiconductor fabs, gas controlling facilities, construction sites, and transportation vehicles.