Semiconductor technology of ultra low power 32 bit microprocessor, 24 bit ADC acquisition chip, so with the high accuracy. 2.4 inch IPS industrial grade color screen. Support Chinese or English operation menu. Detecting data avaible for PPM, %VOL, mg/m3. For 1~4 gas detecting, single gas and some composite gas. Internal sampling pump for suction, the suction strength is adjustable in different level.