SED GPH-610R User Manual
(1) The handset will start pre-alarming
once the handset has detected the
operator is in danger. The
pre-alarm state has two phases: t0
and t1. There is no visual indication
when the pre-alarm started. T0
phase lasts 90 seconds, and then
enters t1 phase if the operator is
still motionless. The handset will
vibrate continuously after entering
t1 phase.
(2) If the operator is detected to still be
in danger after pre-alarming, the
handset will start local alarming (t2
phase) to emit a loud bumming for
danger prompting. The t2 phase