Jinan USR IOT Technology Limited 5 / 9
22
nReady
Indication pin for module working normally, take effect in low level.
Can connect to external LED.
23
nLink
Indication pin for module WIFI connecting successfully, take effect
in low level. Can connect to external LED
24
UART0_CTS
Serial port 0 flow control CTS pin
25
UART0_RTS
Serial port 0 flow control RTS pin, can control the RS485
enable/disable
26
GPIO
GPIO
27
GPIO
GPIO
28
GND
Power Ground
29
GND
Power Ground
30
UART1_TX
Serial port 1 TX Pin
31
UART1_RX
Serial port 1 RX Pin
32
GPIO
GPIO
33
GPIO
GPIO
34
GPIO
GPIO
35
GPIO
GPIO
36
GPIO
GPIO
37
GPIO
GPIO
38
GPIO
GPIO
39
NC
Not available
40
NC
Not available
41
GPIO
GPIO
42
NC
Not available
43
NC
Not available
44
GND
Power Ground
Figure 3 Pin definition
