Lutron AQ-9901SD 6 in 1 Air Quality Meter
Air Quality Meter 
Model: AQ-9901SD 
Lutron – Taiwan 
 
Key Futures:
• Measuring Parameters: CO2(Carbon dioxide), CO(Carbon dioxide), O2(Air oxygen), Humidity/Temperature, Dew Point Temp.(Humidity), Wet bulb Temp.(Humidity)
• Display: LCD size: 52mm x 38mm LCD with green backlight (ON/OFF); Circuit Custom one-chip of microprocessor LSI circuit; Memory Recall: Maximum & Minimum value; Sampling Time: Approx. 1 second; Power Supply: Alkaline or heavy duty DC 1.5 V battery ( UM3, AA ) x 6 PCs
• Sensor structure: CO2 NDIR (Nondispersive infrared sensor),Humidity: Precision capacitance sensor, O2: Galvanic cell type, CO: Galvanic cell type, Temp: Precision thermistor; Datalogger, Sampling Time, Setting range Auto: 2 sec to 8 hour 59 min. 59 sec. @ Sampling time can set to 1 second, Setting range but memory data may loss; Datalogger, Sampling Time, Setting range Manual: Push the data logger button once will save data one time @ Set the sampling time to 0 second @ Manual mode, can also sel
• Operating Temperature: 0°C to 50°C; Operating Humidity: Less than 80% R.H; Data error no: 0.1% of total saved data max; Memory Card: SD memory card. 1 GB to 16 GB; Data Hold: Freeze the display reading
• Accessories: Instruction manual-1 PC, Hard carrying case, CA-08-1 PC, CO2 probe-1 PC, Humidity probe-1 PC, O2 probe-1 PC, CO probe-1 PC