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2.
Structure specification
2.1 Module structure size
The size of the module as shown above
,
length:20.0mm, width:15.0mm,
thickness 1.0mm (error +/- 0.1mm)
2.2 Hardware interface definition
PIN
Signal Name
Description
1
VCC
Supply Input Pin
2
RXD
UART receive data
3
TXD
UART transmit data
4
GND
Ground