... products);Cigarette smoke( hydrogen, carbon monoxide);ammonia and H2S, alcohol, natural gas and smell by peoples body.Sensing elementSemiconductor mix ... , IP30 protection classQuality standardISO 9001 1) Wall mounting, VOC detector is used to real time detect room VOC level2) With ... odorous gases and combustion gas in the room (smoke, CO, alcohol, human odor, material odor).4) With 6 LED indicator ...