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ORIENTAL HUARAY GROUP LIMITED
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Note: Please do not connect any wire on Pin6 and Pin7 and also if the other wire
you do not use, please cut them down, or it will has interface.
If you use the TTL only please make sure the D jumper of JP2 without jumper wire
(D=0)
(2). RS-232 interface connection application circuit
Note: Do not connect other wires or it will has interface.
Module and computer DB9 connection figure: