GSM/GPRS MODEM- SIM900A

SIM900A Modem is built with Dual Band GSM-based SIM900A modem from SIMCOM. It works on frequencies 900/ 1800 MHz. SIM900A can search these two bands automatically. The frequency bands can also be set by AT Commands. The baud rate is configurable from 1200-115200 through AT command. The GSM Modem is having an internal TCP/IP stack to enable you to connect with the internet SIM900A is an ultra-compact wireless module.

The Modem is coming interface, which allows you to connect PC as well as a microcontroller with RS232 Chip(MAX232). It is suitable for SMS, Voice as well as DATA transfer applications in the M2M interface. The onboard Regulated Power supply allows you to connect a wide range of unregulated power supplies.

Using this modem, you can make audio calls, SMS, Read SMS, attend the incoming calls and etc. through simple AT commands. This is a complete GSM module in an SMT type and made with a very powerful single-chip, allowing you to benefit from small dimensions. SIM 900A GSM Modem with serial and TTL outputs.

• • Dual-Band GSM/GPRS 900/ 1800 MHz
  • RS232 interface for direct communication with computer or MCU kit
  • Built-in Network Status LED
  • Inbuilt Powerful TCP/IP protocol stack for internet data transfer over GPRS.
  • Use in the area of full signal strength.
  • Perfectly suited for GSM-based Microcontroller Projects.
  • Supports communication through RS232 with DB9 Connector, TTL Pins, and I2C pins
  • CALL SMS GPRS facility – MIC input, LINE input, and SPEAKER output pins

PACKAGE INCLUDES:

• • 1 X SIM900A GSM GPRS Modem Module with RS232 Interface
  • 1 X SMA Antenna