... gases (VOC) such as ammonia, toluene,formaldehyde and cigarette smoke, alcohol, H2S, and carbon monoxide. So it is very ... to volatile gases like ammonia, toluene, formaldehyde, sensitive to cigarette smoke, alcohol, H2S, etc. u Small volume, lower consumption ü ... Description Power Supply G01-CO2-B520C CO2, TVOC, temperature and humidity monitor/alarm Three-color backlit LCD, buzzer alarm 24VAC/VDC ...