This GSM Modem can accept any GSM network operator SIM card and act just like a mobile phone with its own unique phone number. Advantage of using this modem will be that you can use its RS232 port to communicate and develop embedded applications. Applications like SMS Control, data transfer, remote control and logging can be developed easily.

The modem can either be connected to PC serial port directly or to any microcontroller through MAX232. It can be used to send and receive SMS or make/receive voice calls. It can also be used in GPRS mode to connect to internet and do many applications for data logging and control. In GPRS mode you can also connect to any remote FTP server and upload files for data logging.

This GSM modem is a highly flexible plug and play quad band SIM900A GSM modem for direct and easy integration to RS232 applications. Supports features like Voice, SMS, Data/Fax, GPRS and integrated TCP/IP stack.

Features:

• Built in RS232 Level Converter (MAX3232)
• Configurable baud rate
• SMA connector with GSM L Type Antenna.
• Built in SIM Card holder.
• Built in Network Status LED
• Inbuilt Powerful TCP/IP protocol stack for internet data transfer over GPRS.
• Audio interface Connector
• Most Status & Controlling Pins are available at Connector