Users Manual Part 1

4.3.2 The Acknowledge Key
Acknowledging an alarm
Machine drivers of machines on which the LED display unit is installed can
acknowledge an alarm, thus silencing the audible signal.
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To acknowledge an alarm, press the acknowledge key once.
Setting off the Panic alarm
Machine drivers can set off a Panic alarm to indicate the need for help. The
Panic alarm is displayed on all iCON PA display units within communication
range, enabling drivers of nearby machines to render assistance. (Refer to
"Alarm signals" in "4.3.1 Status Indicators".)
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To set off the Panic alarm, press the acknowledge key longer than
6 seconds.
Functionalities
40 Operation