Main functions:
Support multiple working modes [0-AT control mode (off)/1- always online /2- wake-up online /3- on-demand online];
Support multiple debugging modes [0- off mode/1-GPRS status echo /2- function tracking information];
Support AT command, SMS command, GPRS command configuration and query DTU parameters (see configuration command for details);
Support DTU status query, such as configuration parameters, signal quality, online status, version information, etc. (See configuration command for details);
Support SMS sending, including [0-ASCII/ 1-UNICODE/2- hexadecimal] format (see SMS sending format for details);
Support SMS receiving, including ASCII/ Hexadecimal format (see SMS receiving format for details);
Support SMS command password protection function to prevent parameters from being arbitrarily modified;
Embedded TCP/UDP/DNS/PPP and other protocol stacks;
Support TCP transparent transmission and UDP transparent transmission;
Support domain name and IP connection server;
Support heartbeat packet function to ensure that the terminal is always online;
Support the function of registering packets. First, send the specified packet on the GPRS connection to facilitate the server to identify the terminal.
Support dual service center address to ensure the reliability of GPRS connection;
Support wake-up mode, which can wake up remotely by phone/SMS, and AT commands local wake-up;
Support power failure to save configuration parameters;
Support GPRS network status light indication;
Industrial working temperature -40-+85 degrees;
Can be customized according to customer needs.