User's Manual
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Shenzhen Ronghua Electronic Manuals
Electronics
Commodity Protector
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[Signal
Noise
Ratio]
When
there
is
larg
e
interf
er
ence,
it
ma
y
be
necessary
to
fine
tune
the
rat
i
o
via
J300
in
PCB.
F
actory
setting,
normal
ra
t
i
o
:
1&2
open,
3&4
short
Reduce
rati
o
:
1&2
short,
3&4
open
1
...
...
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6
7
8
9
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10
