Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
Supports SMS, GPRS, DTMF, HTTP, FTP, MMS, email, etc
Bluetooth 3.0, supports data transferring through Bluetooth
UART interface, for connecting host control boards like Arduino/STM32
Baudrate auto detection (1200bps ~115200bps)
Onboard voltage level translator, 3.3V by default, switch to 5V via jumper
2x LEDs for indicating the module working status
SIM card slot for 1.8V /3V SIM card
Control via AT commands (3GPP TS 27.007, 27.005, and SIMCOM enhanced AT Commands)
Supports SIM application toolkit: GSM 11.14 Release 99