Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano

Supports dial-up, telephone call, SMS, TCP, UDP, DTMF, HTTP, FTP, etc.

Supports GPS, BeiDou, Glonass, LBS base station positioning

Onboard USB interface, to test AT Commands, get GPS positioning data, and so on

Onboard CP2102 USB to UART converter, for serial debugging

Breakout UART control pins, to connect with host boards like Arduino/STM32

SIM card slot, supports 1.8V/3V SIM card

TF card slot for storing data like files, messages, etc.

Onboard audio jack and audio decoder for making telephone call

2x LED indicators, easy to monitor the operating status

Onboard voltage translator, operating voltage can be configured to 3.3V or 5V via jumper

Baudrate: 300bps ~ 4Mbps (default: 115200bps)

Autobauding baudrate: 9600bps ~ 115200bps

Control via AT commands (3GPP TS 27.007, 27.005, and V.25TER command set)

Supports SIM application toolkit: SAT Class 3, GSM 11.14 Release 99, USAT

Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)