SIM900 V4.0 GSM/GPRS Module

The SIM900 V4.0 is a GSM/GPRS cellular communication module based on the SIM900 modem platform. It provides a convenient interface for adding mobile network connectivity to Arduino, microcontroller and embedded electronics projects.

The module communicates with a host controller through UART and can be controlled using AT commands. It supports cellular functions including voice calls, SMS messaging and GPRS packet-data communication, making it suitable for a wide range of remote communication and monitoring applications.

The SIM900 V4.0 is commonly supplied as a development board with a SIM card interface, antenna connection and supporting circuitry for easier integration. It can be used in applications such as security systems, remote equipment monitoring, vehicle tracking, telemetry, SMS controllers and industrial automation.

The SIM900 is a 2G GSM/GPRS modem, so the module requires a compatible 2G network. Network availability and supported frequency bands should be checked with the intended cellular network operator before deployment.