

Extech CO100 Desktop Indoor Air Quality CO₂ Meter
The Extech CO100 is a desktop CO₂ monitor designed for indoor air quality control. It displays CO₂ concentration, air temperature, and humidity, and includes user-adjustable visual and audible alarms to alert when CO₂ levels exceed preset thresholds.
Description
The CO100 features an NDIR CO₂ sensor that measures 0 to 9,999 ppm of carbon dioxide. It also displays ambient temperature (–10 °C to 60 °C / 14 to 140 °F) and relative humidity (0.1% to 99.9% RH) on its backlit LCD. Users can set CO₂ alarm thresholds; when exceeded, the unit emits an audible alert and flashes the display. The CO100 provides maximum/minimum recall of CO₂ readings. For convenience, it supports auto power-off in idle mode and comes with a universal AC adapter. Its compact cubic design integrates smoothly into desktops or wall-mounted applications.
Features
- CO₂ measurement range 0 – 9,999 ppm
- Temperature range: –10 °C to 60 °C
- Humidity range: 0.1% to 99.9% RH
- User-selectable CO₂ alarm (visual + audible)
- Max/Min CO₂ recall
- NDIR CO₂ sensor requiring minimal maintenance
- Backlit LCD display
- Auto power-off for energy saving
- Compact desktop or wall-mount design
- Universal AC adapter power supply
Includes
- Maintenance free NDIR (non-dispersive infrared) CO2 sensor
- Universal AC adaptor