Introduction - If you have any usage issues, please Google them yourself
GPRS technology can still ripe for the development of things, such as smart agriculture, smart home, smart cities. gtm900-c-mode is a low-cost GPRS wireless communication module, this document is the development of GPRS reference, contains a detailed description of the ATM commands can be directly implemented GPRS messaging via the serial port, outside any microcontroller or embedded system, you can build a simple of things, and through mobile phones and remote controls.