... the semi-conductor mix gases sensor u 5~7 years life time u High sensitive to volatile gases like ammonia, toluene, ... . Typical Applications u Residential houses, exhibition halls, restaurants, shopping malls, sports gymnasiums, conference rooms, etc. u Museums, theaters, offices, classrooms, ... ------- ±0.4℃(0℃~50℃) ±3%RH (20%-80%RH) Life time 15 years (normal) 5~7 years 10 years Calibration cycle ...