Chengdu Ebyte Electronic Technology Co., Ltd.
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd.
4
1.3 Interface description
1.4 Pin definition
Pin no.
Name
Function
1
RST
Module reset
2
IORT
The low level lasts for 3~10S, the module parameters will be restored to the factory settings, and
will be restarted immediately.
3
LINK
The link connection status indication pin corresponds to the onboard left 1 LED.
High: Successful connection to the web server;
Low: failed to connect to the web server;
4
、
24
、
25
NC
Not used
5
DATA
Data transmission and reception indication pin, when the network receives data or the serial port
receives data (50ms high/10ms low), corresponding to the onboard third LED light from the left.
6
STAT
The device status indication pin corresponds to the onboard second LED from the left.
Low: The device is powered on to search for SIM card1800ms low, 200ms high: the device
checks the correct SIM card and is attaching to the network;
High: The device is attached to the network successfully.
7
RXD
Data receiving pin
，
default 3.3V
，
compatible with 5V
8
TXD
Data transmitting pin
，
default 3.3V
，
compatible with 5V
