alt Hacker NewsA bit OT, but was anyone else amazed by the bad UX of that CO2 monitor in the picture?
If you notice, that monitor has a "traffic light" gauge at the bottom to tell you if the current CO2 level is critical. That traffic light is currently showing RED, i.e. highly critical.
The thing is essentially sounding the alarm and prompting immediate action. However, became the traffic light colors are printed on and static and the only dynamic indicator is a small e-paper bit above the color gauge, the effect gets lost completely.
These CO2 monitors have a configurable audio alarm. The present model uses an e-ink display to conserve battery. Physical LEDs would also work, but really in practice you don’t look at the unit and instead are notified by the audio alarm.