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1
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3
3
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r
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n
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d
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S
S
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n
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s
s
o
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r
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C
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n
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3
3
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s
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c
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r
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p
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1
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3
3
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2
2
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c
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Pin No.
Signal Name
1 Vcc
2
Signal ( Open collector)
3 N.C
4 GND
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T
a
a
b
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1
1
.
.
3
3
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3
3
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