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Description
- DFRobot A9 GSM/GPRS Module
- Offers versatile GSM/GPRS capabilities with RDA8955 chip
- Supports voice calls, SMS, and GPRS/GPS data transmission
- Includes 29 GPIOs and integrated SDK for customization
- Operates with SIM or IoT card using AT commands
- Functions in temperatures from -20℃ to +70℃
The DFRobot A9 GSM/GPRS Module is a versatile quad-band GSM/GPRS module based on the RDA8955 chip, offering a cost-effective IoT solution. It supports voice calls, SMS, and data transmission via GPRS and GPS, making it suitable for applications such as IoT, vehicle-mounted equipment, remote localization, and electric power environment monitoring. The module can operate with a SIM or IoT card and communicate with other devices using AT commands. Additionally, it features 29 GPIOs and an integrated SDK for easy customization and redevelopment.
- 1x A9 Module
- 1x GSM Antenna
- 32-bit RISC core with a frequency of up to 312MHz
- Includes 4k instruction cache and 4k data cache
- Features up to 29 GPIOs, excluding two download pins
- Equipped with a Power Management Unit for lithium battery charge management, including integrated DC and LDOs
- Supports quad-band GSM/GPRS frequencies (850/900/1800/1900MHz)
- Capable of voice calls
- Enables SMS functionality
- Operating temperature range from -20°C to +70°C
- Low Power Mode current is below 2mA on average
- Complies with GPRS Class 10
- Sensitivity is below -105dB
- GPIO level is set at 2.8V
- Supports GPRS data services with a maximum download rate of 85.6 Kbps and upload rate of 42.8 Kbps
- Compatible with standard GSM07.07.05 AT commands and Ai-Thinker's expandable command set
- AT command interface supports standard AT and TCP/IP commands