Ai-Thinker A6 Pro Serial GPRS GSM Module Core Development Board – Quad-Band 850/900/1800/1900MHz, SMS, Voice & GPRS

The A6 Pro Serial GPRS GSM Module Core Development Board provides a convenient serial interface for adding GSM/GPRS connectivity to embedded electronics projects. The underlying A6 platform supports quad-band GSM/GPRS communication, SMS, voice calls, and GPRS data services.

The board includes an onboard power regulation section so the development board can be supplied within its specified input range. A Micro SIM socket provides cellular network access, while the SMA and IPX antenna interfaces provide flexibility when selecting an appropriate antenna configuration.

Communication is handled through UART using AT commands. The A6 platform supports standard GSM AT command families as well as Ai-Thinker extended commands, making it suitable for custom firmware and microcontroller-controlled communication systems.

Features

• Quad-band GSM/GPRS: 850 / 900 / 1800 / 1900MHz
• Supports SMS sending and receiving
• Supports voice calls
• Supports GPRS data communication
• TCP/IP-based data communication support
• UART serial control through AT commands
• Default baud rate of 115200bps
• 3.3V TTL serial logic interface
• Onboard Micro SIM card holder
• Micro USB power interface
• SMA and IPX antenna interfaces
• 2.54mm standard pin spacing
• Onboard voltage regulation
• Low-power and sleep operating modes
• Suitable for embedded IoT and telemetry applications

Applications

• Remote IoT monitoring
• GSM-based alarm systems
• SMS notification systems
• Remote sensor data transmission
• Agricultural and environmental telemetry
• Asset and equipment monitoring
• Remote control systems
• Industrial machine monitoring
• GSM/GPRS educational projects
• Arduino and microcontroller communication projects

How to Use

1. Insert a compatible Micro SIM card with the required cellular service enabled.
2. Connect a suitable GSM antenna to the SMA or IPX antenna interface.
3. Provide the module with a stable power source within the specified 4.8–9V input range.
4. Connect the controller's TX/RX lines to the corresponding UART RX/TX pins.
5. Use appropriate 3.3V TTL logic for the serial communication interface.
6. Open a serial terminal at the default 115200bps setting.
7. Send AT commands to check module status and network registration.
8. Configure SMS, voice, or GPRS functions according to the requirements of your application.

Important Notes

• This is a 2G GSM/GPRS module; local carrier support for 2G service should be verified before purchase.
• Cellular modules can draw substantial short-duration current during network registration and transmission. Use a stable power supply capable of handling the required peak current.
• Do not connect 5V UART signals directly to a 3.3V logic interface. Use an appropriate logic-level converter or voltage-divider arrangement where required.
• Always connect a suitable antenna before operating the cellular radio.
• Network availability depends on the SIM card, carrier, coverage, and local cellular infrastructure.
• GPRS is intended for relatively low-bandwidth data communication rather than modern high-speed mobile internet.
• The supplied antenna specifications may vary depending on the antenna version included with the product.
• Allow approximately 5% measurement deviation for manually measured dimensions.
• Product images are for illustration; PCB layout, connector details, and component markings may vary by production batch.
• This module is intended for DIY, development, and embedded applications and does not replace a certified finished cellular product.

Package Includes

• 1 × A6 Pro Serial GPRS GSM Module Core Development Board