Modul with SIM800L V2.0, GSM GPRS, antenna | GM electronic COM
New Sim900a Kit Wireless Extension Module Gsm Gprs Board Antenna Tested Worldwide Store - Integrated Circuits - AliExpress
A9 GSM/GPRS Breakout Board | Makerfabs
SIM808 Module GSM GPRS GPS Development Board IPX SMA with GPS Antenna for Arduino Raspberry Pi Support 2G 3G 4G SIM Card|Integrated Circuits| - AliExpress
ARDUINO M95 GSM/GPRS-Shield | VARIOUS | SOS electronic