LCD display  (20-999 PPM)
Sensor fault alarm
·Power Supply: DC 9V battery operated
·Sensitivity Setting: EN50291 standard
·Standby Current: <80μA
·Alarm Current: <35mA
·Operation Ambient Condition: 4~38℃, 25~85%R.H.
·Sensor Type: electrochemical
·Battery spec:  DC 9V,Carbon Zinc 6F22 or Alkaline 6Lr61, 1604A for ANSI,6AM6 for JIS
·Alarm sound : ≥85DB at 100cm @3.4±0.5KHz pulsing alarm