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Features: Complete set with 4 seperate probes for easy remote measurement | Dew point temp. and Wet bulb temp. measurement | Can record 3 probe's data (%RH/CO2/O2/Temp) along with the time information into the one excel file | Multi-function CO2, CO, O2, Humidity, Temperature measurement | Alarm setting with the beeper sound output | RS232/USB computer interface
Measuring Range: CO2: 0 to 4,000 ppm | Res: 1 ppm | CO: 0 to 1,000 ppm | Res: 1 ppm | O2: 0 to 30% Vol | Res: 0.1% | Humidity: 5% to 95% R.H | Res: 0.1% R.H | Temperature: 32°F to 122°F / 0°C to 50°C | Res: 0.1°C | Dew Point Temp.(Humidity): -13.54°F to 120.02°F / -25.3°C to 48.9°C | Res: 0.1°C | Wet bulb Temp.(Humidity): -6.88°F to 122°F / -21.6°C to 50.0°C | Res: 0.1°C
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
Operating Temperature: 32°F to 122°F / 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 Capacity 1GB to 16GB | Data Hold: Freeze the display reading.
Supply Scope: 1 unit of AQ-9901SD Air Quality Meter, Instruction manual-1 PC, Calibration Certificate, Hard carrying case, CA-08-1 PC, CO2 probe-1 PC, Humidity probe-1 PC, O2 probe-1 PC, CO probe-1 PC