Whistler 1570 Manual page 12

OPERATION
Mute Mode
Mute cancels audio during an alert and any new alert within
20 seconds. After 20 seconds, approximately 2 beeps are pro-
vided on any new alert and then unit remains quiet.
• Press to cancel the audio.
• Press a second time during an alert to restore the stan-
dard audio alert pattern or by turning the unit off then on.
City/City 1 Mode
Whistler's two-stage City Modes are designed to reduce the
annoyance of automatic door openers, intrusion alarms and
other devices which share frequencies with police radar.
• Press (City) to engage City. Display reads:
CITY
• Pressing a second time engages City 1. Display reads:
CITY 1
• Pressing (City) a third time cancels City and City 1.
Display reads:
HIGHWAY
In City Mode, weak speed/safety radar signals give an initial alarm
of two beeps, and then remains quiet unless the signal becomes
very strong. When the signal strength increases, two additional
beeps are provided. In City 1 Mode, only the X band sensitivity is
lowered. If Auto Quiet is engaged and the unit receives a strong X
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