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Fisher CW20 Operating Manual page 5

Hand-held

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Batteries
Use 9-Volt ALKALINE battery only (included)
Low Battery Alert
The Yellow LED indicator light will illuminate and remain illuminated before the batteries
are discharged to the point at which the detector has lost any of its metal detecting
range.
In order to guarantee maximum detection at all times, replace battery as soon as yellow
light illuminates.
The detector will continue to operate, at a lower sensitivity, after the Low Battery
Indicator is illuminated. Replace batteries as soon as possible after the indicator
illuminates.
If you plan to store the CW20™
for several days or more,
remove the battery.
+
"
" Polarity Side for Battery
G
+
Battery
Chamber
YELLOW LED
Low Battery
Indicator

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