The fire service if they go in a building they have on there belt this PASS
device. will sound so they can find you.
If you pass out and our still for ten minutes.
Thay do not radio for help.

ICM 2000 & ICM 2000 Plus Dragonfly PASS
The ICM 2000 and ICM 2000 Plus are integrated Computer modules
designed to meet the new NFPA-1982, 1998 Edition PASS standard and
NFPA-1981, 1997 Edition SCBA requirements for redundant End-of-Service Time
indicators (EOST).
The ICM 2000 is an all in one combination PASS and redundant alarm
module that can be added to any MSA MMR or BMR SCBA. Simply remove the
shoulder mounted pressure gauge and replace it with the ICM module.

The ICM 2000 Plus is an all in one combination PASS and redundant
alarm with a built in computer system that digitally displays SCBA
performance information. The ICM 2000 Plus also offers a data logging and
data downloading capability to retrieve up to 30 hours of SCBA usage
information. The data provides information about the time of use, air
consumption rate, ambient temperature and alarm activation. Through the
device's IR (Infrared) port, the data can be downloaded to a personal
computer for future evaluation.