Brief introduction: The DN-A1000 toxic gas detector is a personal pocket-sized gas detection instrument. It is suitable for continuous monitoring of gas concentrations in industrial and mining environments. The DN-A1000 toxic gas detector is compact in size and can be carried in a pocket. Its sensor features a sensitive response. The instrument uses an LCD digital display to show the environmental gas concentration. If the set upper alarm limit is reached, the instrument will emit an audible and visual alarm signal.