Product Specs

7.Module footer definition diagram:
8.Pin function description
Symb
I/O
Description
3.3V-5.0V
P
Power 3.3V-5.0V
UART RXD
I/O
GPIO1 or UART2 RXD or I2C2 SDA
UART TXD
I/O
GPIO0 or UART2 TXD or I2C2 SCL
GND
G
GND
9.Matters need attention