User's Manual
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Electronics
Industrial Image Processing Unit
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R-USM-503
(4)
Marking and labeling s
ymbols
Symbols
Meaning
Caution :
“
Attent
ion, see instructions f
or use
”
Alternate current
Protective earth (Gr
ound)
Off (power : disconnect f
rom the m
ain switch)
On (power : connec
t to the m
ain switch)
W
arning
Caution
Note
1
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