Open hardware module for providing communications support via GPRS to embedded projects. The module can use any 2G network operating in the 850/900MHz or 1800/1900MHz spectrum. The modem features an audio link for voice calls and a TCP/IP stack for data transfer.
Documentation for the module is available in the docs folder.
Various resources used to design the module are available in the resources folder.
- MicroSIM connector
- 3.5mm jack with microphone
- status LED indicator
- two serial ports ( ATcommands on main serial port and support for daisy chaining a second UART device)
- standard u.FL connector for antenna
- standard ApolloIoT expansion header
You can find all necesary information to build or evaluate the module here: