Product Specs

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7 Module Pinout and Pin Definition
Note:

I/O
A digital bidirectional signal
 I
A digital input signal
 O
A digital output signal
 P
A power or ground signal
 OA
An analog output signal
 IA
Analog input signal
 IH
Input signals with weak internal pull-up,to prevent signals from floating when left open
 NC
No connection should be made to this pin