SIM900A GSM GPRS Modem Module with RS232 Interface And SMA Antenna

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. 

Features:

• 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.
• Compatible with Arduino, raspberry pi, arm, avr, pic, 8051
• Use in the area of full signal strength.
• Perfectly suited for GSM-based Microcontroller Projects.
• Option for connecting MIC and SPEAKER directly to GSM MODEM for calls 
• 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