Built-in GSM wireless module

The smallest of its kind, suitable for embedded integration and energy-saving mode, suitable for mobile devices

Internal hardware and software watchdog, monitor the running status at any time to ensure stable and reliable operation of the product

Strong anti-interference, good housing package

Quick and easy to use, easy to install

Universal RS-232 interface or RS-485 interface or TTL level interface

Use a simple AT command interface

Can realize services such as telephone, SMS, CSD, etc.

Flexible networking such as point-to-point, point-to-multipoint, and CSD