GSM/GPRS Modem-RS232 is built with Dual Band GSM/GPRS engine - SIM900Awhich works on frequencies 900/1800 Mhz. The Modem comes with RS232 interface, which allows the user to connect PC as well as microcontroller with RS232 Chip(MAX232). The baud rate is configurable from 9600- 115200 through AT command. The GSM/GPRS Modem is having internal TCP/IP stack to enable the enable the user to connect with internet via GPRS. It is suitable for sending SMS, Voice as well as DATA transfer application in M2M interface. The onboard Regulated Power supply allows the user to connect wide range of unregulated power supply. Using this modem, user can make audio calls, sending SMS, Reading SMS, attend the incoming calls and internet etc., through simple AT commands.

Features of GSM GPRS SIM900A Module With Stub Antenna And SMA Connector:

• Dual-Band GSM/GPRS 900/ 1800 MHz.
• RS232interface for direct communication with computer or MCU kit.
• Configurable baud rate.
• Stub Antenna and SMA Connector.
• SIM Card holder.
• Built in Network Status LED.
• Inbuilt Powerful TCP/IP protocol stack for internet data transfer over GPRS.
• Input Voltage: 12V AC/ DC.
• MI Connector.
• Speaker Connector.

Applications of GSM GPRS SIM900A Module With Stub Antenna And SMA Connector:

• It is used in GSM/GPS based projects.

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