Product name
Air quality monitor
Power supply
USB and adaptor
Detecting Item
CO2, Temperature, Humidity
CO2 sensor
NDIR sensor, with 15 years lifetime
historical data diagram
trend chart for old data to check
Calibration
auto-calibration / Manual calibration
Alarm Type
Audible and Visual
4 LED indicator light
Good, Normal, Poor, Power Indicator
Data storage
Max/Min Recall display on LCD