Supports dial-up, telephone call, SMS, TCP, UDP, DTMF, HTTP, FTP, etc
Supports GPS, BeiDou, Glonass, LBS base station positioning
Supports SIM application toolkit: SAT Class 3, GSM 11.14 Release 99, USAT
Onboard USB interface, to test AT Commands, get GPS positioning data, and so on
Onboard CP2102 USB to UART converter, for serial debugging
Onboard audio jack and audio decoder for making telephone call
Onboard voltage translator, operating voltage can be configured to 3.3V or 5V via jumper
SIM card slot, supports 1.8V /3V SIM card
TF card slot for storing data like files, messages, etc
2x LED indicators, easy to monitor the working status