CO2 Monitor 2800Instruction 19-92201.5 Important NoteAlways ensure that the sensor grille located on the front of the unit is un-obstructed and open to the atmosphere. A quick instrument check can beperformed by breathing directly into the sensor grille. This will cause theindicated CO 2 level to increase and may cause the instrument to alarm.A - Digital DisplayB - Gas diffusion grilleC - Alarm lightD - IrDA communication linkE - Alarm lightF - Audible alarm locationG - Test button (fl)H - Battery charging andear phone socketI - Air calibration button (f2 )J - On/Off Button1.6 CleaningKeep the unit clean by wiping with a soft cloth dampened with a milddetergent solution.1.7 SunlightThe unit should not be left out in direct sunlight, or in other areas whereexcessive heat exists, for long periods since component damage due tooverheating may result.1.8 ServicingThere are no user-serviceable parts inside the CO2 Monitor.Unauthorized disassembly of the unit will invalidate the warranty.2