The 32U4 with A6 GSM/GPRS Board is based on mega32U4 and A6 GSM/GPRS module. It can be used to call and seed text messages, via GPRS to upload data to server. At the same time it leads to an analog interface, an IIC interface and 2 digital interface. which you can connect to other module more easily.
Remote control and data acquisition will be more convenient.It is worth mentioning that this module can be powered by battery, and comes with a battery charging circuit, some IOT projects will make it take a leading role.