The 4-in-1 Upgraded Natural Gas Leak Detector and Carbon Monoxide Detectors by Gasco, model kh158, is a reliable and efficient tool for detecting both carbon monoxide and gas leaks. This dual-function detector provides peace of mind for businesses and households by ensuring the safety of the environment. With its advanced technology, this detector offers quick and accurate results, making it a valuable asset for anyone looking to safeguard their space from potential gas and carbon monoxide leaks.