Description
This indoor air quality meter measures and records carbon dioxide (CO2), temperature, and humidity. The R9920 features a high-resolution color TFT touchscreen display, user-selectable recording times, programmable alarm set points, a built-in desk stand, and a wall mounting bracket. Quickly generate an Excel file with raw data and export recorded data to a computer without the use of the software.
Features
- Simultaneously monitors carbon dioxide (CO2), temperature and relative humidity
 - Low-drift NDIR CO2 sensor for stable and accurate readings
 - User selectable unit of measure (°C or °F)
 - 7" (178mm) high-resolution color TFT LCD (1024 x 600 pixels)
 - User adjustable high and low alarms
 - Max/min display
 - Internal 16GB memory stores data points in CSV format
 - User selectable sampling rate from 1 second to 24 hours
 - Internal time and date stamp
 - Rechargeable li-ion battery
 - Built-in desk stand and wall mounting bracket
 - Low battery indicator
 
What's included with the REED R9920
- Indoor Air Quality Meter
 - USB Cable
 - Power Adapter
 - Wall Mounting Bracket
 
| Temperature | |
| Measuring Range | 32 to 122°F (0 to 50°C) | 
| Accuracy | ±1.8°F (1°C) | 
| Resolution | 0.1°F/°C | 
| Humidity | |
| Measuring Range | 0 to 100% RH | 
| Accuracy | ±3.5% (20 to 80% RH) ±5% (<20% and >80% RH)  | 
| Resolution | 0.1% RH | 
| CO2 (Carbon Dioxide) | |
| Sensor Type | Nondispersive Infrared (NDIR) | 
| Measuring Range | 0 to 9999ppm | 
| Accuracy | ±5% rdg +75ppm | 
| Resolution | 1ppm | 
| Response Time | <2 seconds | 
| General Specifications | |
| Display | 7" (178mm) high-resolution color TFT | 
| Display Resolution | 1024 x 600 pixels | 
| Adjustable Brightness | Yes | 
| Min | Yes | 
| Max | Yes | 
| Data Logging Capabilities | Yes | 
| Real-Time Clock and Date Stamp | Yes | 
| Selectable Sampling Rate | Yes (between 1 second and 24 hours) | 
| Internal Memory | Yes (16GB) | 
| Alarms | Yes (Low and High) | 
| Kick Stand | Yes | 
| Wall Mountable | Yes (bracket included) | 
| Low Battery Indicator | Yes | 
| Power Supply | 3000mAh rechargeable Li-ion battery/power adapter | 
| Battery Life | ~2 hours | 
| Charge Time | ~9 hours | 
| PC Connectivity | USB Cable (Type-C) | 
| USB Cable Length | 10' (3m) | 
| Product Certifications | CE | 
| Operating Temperature | 14 to 104°F (10 to 40°C) | 
| Storage Temperature | 14 to 104°F (10 to 40°C) | 
| Operating Humidity Range | 0 to 100% | 
| Maximum Operating Altitude | 6561' (2000m) | 
| Dimensions | 7.8 x 4.6 x 1" (198 x 118 x 25.7mm) | 
| Weight | 12.9oz (365g) | 








