- Emergency
- Possible fall or impact. Call the crew member on the comm loop now.
- Warning
- A reading is clearly outside the safe range, or no breathing or movement was seen. Check in with the crew member.
- Caution
- A reading has drifted outside the expected range. Keep watching. Check in if it continues.
- Advisory
- The signal is poor, for example from radio interference, or something moved near a resting crew member while their breathing stayed steady. No action unless it persists.