SIM900 - GSM/GPRS Modem Terminal with RS232 & TCP/IP
The SIM900 is a stable & reliable GSM/GPRS modem terminal with a built-in TCP/IP stack, allowing internet connectivity over GPRS. It is an ideal solution for sending SMS, creating data sessions and any kind of M2M (Machine-to-Machine) application.
It works as a ready-to-use terminal for industrial and automated installations: recorders, PLCs, access control, telemetry, remote data collection, etc.
Key Features
- A complete GSM/GPRS modem terminal, ready to use.
- Dual-Band operation on 900 / 1800 MHz.
- Built-in TCP/IP stack for GPRS internet connectivity.
- RS232 interface for connection to a computer, microcontroller or PLC.
- Support for SMS PDU/Text mode.
- Serial baud rate 9600 – 115200 Kbps (via AT commands).
- Controlled via standard AT commands for full configuration & control.
- Suitable for M2M applications: telemetry, automation, alarm systems, meter readings, etc.

Package Contents
• GSM antenna
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