CEM
CEM DT-802 Desktop CO2 Monitor Air Quality Tester
Monitors indoor CO₂, temperature and humidity with NDIR sensor, audible alarm and automatic baseline calibration over 7.5 days
- TypeTest Equipment
- Color/FinishRed
- Item Count1 pack
- Selling UnitBox
- Parts3 Years
- Labor1 Year
- Monitors CO2 up to 9999 ppm with NDIR sensor
- Tracks temperature from -5 to 50 °C with 0.1 °C resolution
- Measures humidity 0.1 to 90.0 %RH with ±3 %RH accuracy
- Shows date and time alongside air quality readings
- Audible and visible alarm warns when CO2 rises
Purpose and Audience
The CEM DT-802 is a desktop CO2 monitor that measures carbon-dioxide concentration, temperature and relative humidity in indoor spaces. It suits facility managers, teachers and homeowners who need a visible and audible alarm when air quality drops.
Interface Limits
The non-dispersive infrared sensor reads CO2 from 0 to 9999 ppm with 1 ppm resolution and an accuracy of ±75 ppm up to 2000 ppm or ±8 % above that level. Temperature range spans -5 to 50 °C with ±1 °C accuracy, while humidity covers 0.1 to 90.0 %RH with ±3 %RH accuracy between 30 and 99 %RH at 25 °C and ±4 %RH below 30 %RH.
Upgrade Context
This unit replaces simple colour-indicator badges or single-point testers by adding continuous logging, max/min recall and automatic baseline calibration over 7.5 days. The jump is worthwhile when occupants require time-stamped records and an audible alert instead of a periodic spot check.
Highlights
- Monitors CO2 up to 9999 ppm with NDIR sensor
- Tracks temperature from -5 to 50 °C with 0.1 °C resolution
- Measures humidity 0.1 to 90.0 %RH with ±3 %RH accuracy
- Shows date and time alongside air quality readings
- Audible and visible alarm warns when CO2 rises
Specifications
| Brand | CEM |
|---|---|
| Model | DT-802 |
| Type | Test Equipment |
| Color/Finish | Red |
| Item Count | 1 pack |
| Selling Unit | Box |
| Parts | 3 Years |
| Labor | 1 Year |
Questions about this item
Should I pick the DT-802 or another CEM model for desktop CO2 monitoring?
The DT-802 is the specific model listed; it uses an NDIR sensor and covers 0-9999 ppm with 1 ppm resolution.
What does the 0-9999 ppm range mean when I use the DT-802 in a real room?
It reads from outdoor levels up to very high indoor concentrations, with ±75 ppm accuracy up to 2000 ppm and ±8 % above that.
How does the NDIR sensor and automatic baseline calibration work in practice?
The non-dispersive infrared sensor self-calibrates using the lowest CO2 level seen over 7.5 days, or you can calibrate manually in fresh air.
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