The GSM/GPRS SIM900 Module is a versatile breakout board with dual frequency capabilities. It features an onboard dual power supply interface, SAM female socket, and IPX mini antenna interfaces. This module allows for selectable interfacing voltage, making it compatible with both 5V and 3V microcontrollers. It includes built-in GPRS multi-slot class 10/8 and mobile station class B functionalities. With a serial port circuit protection, it supports power-on and reset operations, making it ideal for sending and reading SMS, and data transfer applications in M2M interfaces.
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