GSM Modem Module SIM900A – Call, SMS & GPRS, RS232/TTL/I2C, MIC & Speaker Pins

Easily add GSM communication capabilities to your projects with the SIM900A GSM modem module. It supports call, SMS, and GPRS functions, making it ideal for IoT, embedded systems, and communication applications.

Equipped with MIC input, LINE input, and speaker output pins, the module provides flexible audio interfaces. Communication is supported via RS232, TTL, and I2C protocols for seamless integration with microcontrollers and development boards. An SMA antenna ensures reliable connectivity.

Key Features:

• GSM modem module with SIM900A chipset

• Supports call, SMS, and GPRS functions

• MIC input, LINE input, and speaker output pins

• Communication via RS232, TTL, and I2C protocols

• SMA antenna for stable network connectivity

• Ideal for IoT, embedded, and communication projects