Gas detection: cigarette smoke, VOCs such as formaldehyde and toluene, ethanol, ammonia, hydrogen sulfide, sulfur dioxide N Real time detect and indicate Indoor Air Quality n High sensitivity to VOC and various other indoor air gasesn 5~7 years lifetimen Providing 1x dry contact output to control a ventilatorn Providing RS485 communication interface to be connected with a PC or DDC/PLCn Featured ...