User's Manual

Table Of Contents
USR-G809 User Manual Technical Support:
h.usriot.com
Jinan USR IOT Technology Limited www.pusr.com
91
7. When connect to the 4G network successfully, the DO1 will always be set to a high level;
When 4G network is disconnected, the DO1 will always be set to a low level;
When connecting DO1 to a LED, can control the LED light on and off.