3 Review(s)

The SIM900A GSM Modem integrates a Dual-Band GSM module from SIMCOM, supporting the 900 MHz frequency band. This module can automatically detect the supported bands and can be manually configured through AT Commands. It offers a configurable baud rate range from 1200 to 115200, making it adaptable to various applications. The SIM900A is designed as a compact wireless module for M2M (Machine-to-Machine) communication and supports SMS, voice, and data transfer.Equipped with an RS232 (MAX232) interface, the modem can easily connect to both PCs and microcontrollers. The built-in regulated power supply ensures compatibility with a wide range of unregulated power sources. With this module, you can send and receive SMS, make and receive calls, and perform data operations using straightforward AT commands. The SIM900A GSM Modem is an all-in-one SMT module with serial and TTL outputs, designed with a powerful single-chip architecture for compact and efficient functionality.