Furuno DRS4W Operator's Manual page 4

NOTICE
Do not expose the radar sensor to
strong water jets.
Excessively strong water jets can damage
the sensor.
WARNING LABEL
A warning label is attached to the sensor. Do not
remove the label. If the label is missing or
damaged, contact a FURUNO agent or dealer
about replacement.
Name: Warning Label (2)
Type: 03-129-1001-3
Code No: 100-236-743
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SAFETY INFORMATION