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WARNING
To operate with
visual alert only, set
the volume control to
the minimum.
Remember though,
if the volume control
is turned down and
Audio Only operation
is selected, the alarm
features are
completely disabled.
VISUAL ALERT ONLY OPERATION
You can operate the LRD 747/LRD 757 in Visual Alert Only by
setting the volume control at the minimum position in Full
Alert Mode. At this setting you can barely hear the audio alert
in a quiet environment. Be sure that the Audio Alert Only
indicator is off.
AUTO MUTE OPERATION
Press the mute button to activate the Auto Mute feature.
When the Mute Indicator is selected, the unit is in Auto Mute
Mode. In this mode you hear the full audio alert when a
signal is first received. The audio alert automatically reduces
to a chirp for the duration of the warning.
15
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