Features : 

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
• Supports protocols including TCP/IP, HTTP(s), MQTT(s), FTP(s), and SSL
• Supports dial-up, telephone call, SMS
• Supports LBS base station positioning, it is able to get the approximate position info via mobile network
• TTS (Text To Speech) feature, texts in Chinese/English can be converted into spoken words
• Onboard USB interface, for testing AT Commands, network communication, and so on
• Onboard audio jack for sound recording, making telephone call, listening the TTS resulting speech, etc.
• Onboard USB to UART converter, for serial debugging, or accessing the Raspberry Pi
• Breakout common used control pins of the A7600X module, make it easy to connect with hosts boards like Arduino/STM32
• SIM card slot, supports 1.8V/3V SIM card
• TF card slot for storing data like files, audio data, etc.
• 2x LED indicators, easy to monitor the operating status
• Onboard voltage translator, operating voltage can be configured to 3.3V or 5V via 0Ω resistor jumper
• Baudrate: 300bps ~ 4Mbps (default: 115200bps)
• Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)

Resources : 

https://www.waveshare.com/wiki/A7600E_Cat-1/GSM/GPRS_HAT

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