... Emitting Diode)Two level alarms and fault alarm indicatorOperationmagnetic pen & bi-directional infrared remote controller (optional)MeasurementCombustible, toxic gasPrinciple Photo IonizationSample Methodnatural ... ,100ppm,200ppm,500ppm,1000ppm,2000ppmResolution1%F.SAccuracy3% F.S.=Response Time (T90)≤30 secAlarm Configurationtwo levels alarm, the alarm concentration programmableAmbient ...