A9 GSM/GPRS Module

A complete quad-band GSM/GPRS module based on the RDA8955 chip. The A9 supports voice calls, SMS, and serial-to-GPRS data transmission, making it a cost-effective IoT solution for vehicle tracking, remote monitoring, and environmental sensing.

The module communicates via AT commands and includes 29 GPIOs and an integrated SDK for custom development. Just add a SIM or IoT card to get started.

Key Features

• Quad-Band GSM/GPRS – 850/900/1800/1900 MHz
• 32-Bit RISC Core – Up to 312 MHz with 4K instruction and data cache
• 29 GPIOs – Including two download pins
• Voice Call and SMS – Full telephony support
• PMU – Integrated lithium battery charge management, DC-DC, and LDOs
• AT Command Support – Standard GSM 07.07/07.05 plus TCP/IP commands
• GPRS Class 10 – Download up to 85.6 Kbps, upload up to 42.8 Kbps
• Integrated SDK – For custom firmware development

Specifications

• Operating Temperature – -20 to 70°C
• Low-Power Current – Below 2 mA (average)
• Sensitivity – <-105 dB
• GPIO Level – 2.8 V

Also Available

• A9G GSM/GPRS+GPS Module – adds integrated GPS positioning

Resources

• Product Wiki

Package Contents

• 1× A9 GSM/GPRS Module