SIM900A modem is designed by SIMCOM. This miniature GSM/GPRS modem can be integrated into a great number of IoT projects. It operates on frequencies 850MHz, 900 MHz, 1800 MHz, and 1900 MHz. This is small in size and easy to use as a plug-in GSM Modem. Using the AT command the baud rate is configurable from 1200-115200. This SIM900A 5V V4.0 Kit Wireless Extension Module GSM GPRS Board consists of two sets of on-board power supply interface VCC5 5V power supply, VCC4 interface, 3.5–4.5V power supply, optional power on self-starting (default), and control start. And also an onboard SMA (default) and IPXmini antenna interface, allows the SIM900A interface reserved reset.

Specifications :

• Product - Wireless Extension Module V4.0 Kit
• Model No -  SIM900A
• Operating Voltage - 3.5-5V DC
• Support - CSD, USSD, SMS, FAX

Features :

• Supports MIC and Audio Input
• Speaker Input
• Features keypad interface
• Features display interface
• Features Real-Time Clock
• Supports UART interface
• Supports a single SIM card
• Firmware upgrade by debug port
• Communication by using AT commands

Package Include :

1 x SIM900A V4.0 Kit Wireless Extension Module Antenna Tested GSM GPRS Board 5V