O2 Monitor
Status: Not Connected
Oxygen Level
--.-
% O₂ by Volume
NORMAL
Zone Reference
Lethal Low
<6%
Danger Low
6–16%
Normal
19.5–23.5%
Enriched
23.5–30%
Lethal High
>30%
O₂ Trend (last 60s)
Min: --%   Max: --%