PASS-Personal Alert Safety System

An Extract of NFPA 1982, 2007 edition

 Amos Hsu

1. at least 3 mode : off, alarm, and sensing.
2. automatic activation by pulling off tether or remote controller.
3. 0→alarm mode : one action.
4. alarm → silence : at least 2 separate and distinct actions. and can't remain in off mode, but automatically reset  PASS to sensing mode.
5. pre-alarm signal for 10 sec + 3/-0 sec
6. alarm signal(have a duration of at least 1 hour at a sound pressure level not less than 95dBA) : not sensing movement for 30 sec +5/-0 sec

起因是主管勤教的時候突然拿出一個歷史悠久(民國83年)的裝備問誰是今天的瞄子手，是我，他就把這個東西拿給我。