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SIM 900A GSM Module

SIM 900A GSM Module
SIM 900A GSM Module SIM 900A GSM Module
Product Code: SIM900A
Availability: In Stock
Price: Rs 1,250
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SIM900A TTL Modem is built with Dual Band GSM/GPRS 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/GPRS Modem is having internal TCP/IP stack to enable you to connect with internet via GPRS.

SIM900A is an ultra compact and reliable wireless module. This is a complete GSM/GPRS module in a SMT type and designed with a very powerful single-chip processor integrating AMR926EJ-S core, allowing you to benefit from small dimensions and cost-effective solutions.

SIM900A features

  • GPRS multi-slot class 10/8
  • GPRS mobile station class B
  • Compliant to GSM phase 2/2+
    •   Class 4 (2 W @850/ 900 MHz)
    •   Class 1 (1 W @ 1800/1900MHz)
  • Dimensions: 24 x 24 x 3mm (Modem Only)
  • Control via AT commands (GSM 07.07 ,07.05 and 
  • SIMCOM enhanced AT Commands)
  • Low power consumption: 1.5mA(sleep mode)
  • Operation temperature: -40°C to +80 °C

Specifications for Data

  • GPRS class 10:     
    • max. 85.6 kbps (downlink)
    • max 42.8 kbps (uplink)
  • PBCCH (Support packet Switched Broadcast Control Channel) support
  • Coding schemes CS 1, 2, 3, 4

Specifications for SMS via GSM/GPRS

  • Point to point MO and MT
  • SMS cell broadcast
  • Text and PDU mode 

Software features

  • 0710 MUX protocol
  • embedded TCP/UDP protocol
  • FTP/HTTP( available at late July ,2010)
  • FOTA ( available at July ,2010)
  • MMS (available at July ,2010)
  • Embedded AT (available at Q3,2010) 


  • AT cellular command interface

SIM900A TTL BOARD Features

  • Current: 1.5amps 
  • On Board Power LED
  • On Board Network LED
  • RS232 Serial Control (TX and RX)
  • Modem Reset PIN OUT
  • Default Baud Rate: 9600. Databits: 8, Parity: None, Stop Bit: 1
  • Board Specifications
    •     Board Dimensions: 45 x 35 mm
    •     Meterial: FR4
    •     Board Thickness: 1.6mm
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