A9G GSM/GPRS+GPS Modules is a quad-band GSM/GPRS module based on RDA8955 SoC and comes with 29 GPIOs and an integrated SDK. These modules support the basic phone voice call/SMS, serial to GPRS, and GPS data transmission functions which can be used in a wide range of applications. The A9G modules allow users to make a voice call, use SMS services, and access the internet and base position with only a 2G SIM card. These modules operate at -20°C to 70°C temperature range. Applications include IoT, vehicle-mounted equipment, remote localization, and electric power environment monitoring.
This GPRS GSM breakout board based on the AI-Thinker A9G, which is the newest GSM GRPS Quad-Band module. You can add voice, text, SMS, and data to your project with this module. It is a high-cost performance compare with SIM800, SIM900. A9 is an ideal solution for M2M applications, suitable for automotive, industrial and PDA, personal tracking, electricity environment detection, wireless POS, smart metering, and other M2M applications, to provide comprehensive GSM / GPRS text messaging, voice and data transmission services.
You can use it with two way, with AT Commands and also with Micropython.
Features of A9G Board :
Working voltage: 5v USB or Lipo battery(3.3V-4.2V)
Support the GSM / GPRS four bands, including 850,900,1800,1900MHZ
Supports digital audio and analog audio, supports HR, FR, EFR, AM R voice coding
Support voice calls and SMS messages
Embedded network service protocol stack
Support standard GSM07.07.07.05AT command
A9G Board Pinouts
Getting Started Video
If you want to learn how to use this board well we have made a detailed tutorial video about how to get started with it and how to use it’s features
TP4056 1A Li-Ion Battery Charging Board Micro USB with Current Protection Good Quality 
Electronic Components, IoT & Wireless Boards
