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Gsm Sim900a Gsm Module With Pre Registered Imei With Pta



GSM Sim900A– the GSM SIM900A by the SIMCom is designed for global market, SIM900A is a dual-band GSM/GPRS engine that works on frequencies EGSM 900MHz and DCS 1800MHz. SIM900A features GPRS multi-slot class 10/ class 8 (optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.

With a tiny configuration of 24mm x 24mm x 3mm, SIM900A can meet almost all the space requirements in your applications, such as M2M, smartphone, PDA, and other mobile devices.

GSM Sim900A

The physical interface to the mobile application is a 68-pin SMT pad, which provides all hardware interfaces between the module and customers’ boards.

The SIM900A is designed with power saving technique so that the current consumption is as low as 1.5mA in SLEEP mode.

The SIM900A is integrated with the TCP/IP protocol; extended TCP/IP AT commands are developed for customers to use the TCP/IP protocol easily, which is very useful for those data transfer applications.

SIM900A key features:

GSM Sim900A

GSM SIM900A Functional Diagram:

GSM Sim900A

The above figure shows a functional diagram of the SIM900A and illustrates the mainly functional parts:

  • The GSM baseband engine
  • Flash and SRAM
  • The GSM radio frequency part
  • The antenna interface
  • The Other interfaces

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