The alarm relay mode of the craft interface
panel for both yellow and red alarms.
Both yellow and red alarms could be cut off
by a front panel Alarm Cutoff / Lamp Test
(ACO/LT) button.
In the pass-on mode, the alarm relay will be
activated to pass on the yellow or red alarms.
In the cut-off mode, both yellow and red alarms
will be cut off from the alarm relays which are
normally connected to audible sirens or visual
flashing devices.