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Support dial-up Internet access, telephone, SMS, TCP, UDP, DTMF, HTTP, FTP and other functions.
Support GPS, Beidou, Glonass, LBS base station positioning
Onboard USB interface, which can be used to test AT commands, obtain GPS positioning information, etc.
Onboard CP2102 USB to UART chip, convenient for serial debugging
The control interface such as UART of the module is led out, which is convenient to connect to the main control board such as Arduino/STM32.
Onboard SIM card slot, supports 1.8V and 3V SIM cards
Onboard TF card slot, which can be used to store files, text messages and other data
Onboard audio interface and audio decoding chip, which can be used for voice operations such as making calls
Onboard 2 LED indicators, easy to check the operating status of the module
The onboard level conversion circuit can switch the 3.3V/5V working level through the jumper cap.
Support baud rate range: 300bps~4Mbps (default is 115200bps).
Support automatic baud rate identification (9600bps ~115200bps)
Support AT command control (based on 3GPP TS 27.007, 27.005 and V.25TER command set).
Support SIM Application Kit: SAT Level 3, GSM 11.14 Release 99, USAT