... weight:200g Accuracy:±3%F.S. Detecting way:Ciffusion Type or Pump suction method Concentration unit:ppm,%VOL,%LEL,mg/m3 Acousto ... .6 VDC Alarm current: 120mA The working current: KuoSanShi 10mA, pump suction method 60mA Battery capacity: 1800mA, take charge protection circuit ... continue to work. If the instrument is pump suction method, the screen Will display pump icon, and has been in rotation, and ...