... and visual alarm signal shall be given instantly while at the same time the machine stops operation automatically, thus ... ,OCCL.,AIR,low battery, control abnormal, no AC power supply, installation error.Flow rate range1-600ml/hDisplayed informationRate, volume ... 86~106kPa, relative humidity20%~90%Power supplyAC100-240V,50/60 Hz,25VAStorage and transport conditionsEnvironment temperature -15 °C~+50 ...