Honeywell BW™ Solo Serviceable Single-Gas Detector in Yellow or Black is a easy to service single-gas detector with BLE connectivity that provides real-time visibility into the status and safety of hazardous-area workers, in detecting Chlorine, Chlorine dioxide, Carbon monoxide, Ethylene oxide, Hydrogen, Hydrogen sulphide, Hydrogen cyanide, Ammonia, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Phosphine and Sulfur dioxide gases, helping companies respond faster, more knowingly and decisively to safety.