GSM/GPRS TTL SIM900 Modem

Product Name: SIM900

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Additional Details

Product Name: SIM900

Specifications
RS232/TTL GPRS SIM900A SIM300 modem
1.GSM/GPRS module SIM900/SIM300


The smallest MODEM with two module option sim300/sim900A.This is a GSM Modem with a simple to implement RS232, TTL Serial,Use it to send SMS, make and receive calls, and do other GSM operations by simple AT commands through a serial interface from microcontrollers and computers. It uses the highly popular SIM300/SIM900A module for all its GSM operations. It comes with a standard RS232 interface which can be used to easily interface the modem to microcontrollers and computers. The modem also features a serial TTL interface option. All modem operations(sending and receiving messages, calls, etc) can be carried out by sending AT commands to this virtual serial port though a serial terminal program. Most programming languages allow sending and receiving serial commands to a serial port and can be used to write softwares that can operate the modem without the need to implement any complex interface. This makes the modem a great choice if you plan to use GSM features on a computer.SIM900A ALSO HAVE FEATURE OF FTP/HTTP.
The modem consists of all the external circuit required to start experimenting with the SIM300/SIM900/SIM900A module like the power regulation, antenna, SIM Card connection, etc.

Interface & pinout Interface to external SIM 3V/ 1.8V 
5v/4.2v pins for supply
module reset pin
Rxd/Txd pins for ttl use.


General Features  of simcom:

  • Quad-Band 850/ 900/ 1800/ 1900 MHz
  • 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* 24 * 3 mm
  • Weight: 7g
  • Control via AT commands (GSM 07.07, 07.05 and
  • SIMCOM enhanced AT Commands)
  • SIM application toolkit
  • Supply voltage range 3.4...4.5 TTL
  • Supply voltage power full dc to dc 9v to 36v
  • Low power consumption
  • Normal Operation temperature: -30 C to +80  C


Specifications for Fax
Group 3, class 1

Specifications for Data
GPRS class 10: Max. 85.6 kbps (downlink)
PBCCH support
Coding schemes CS 1, 2, 3, 4
CSD up to 14.4 kbps
USSD
Non transparent mode
PPP-stack

Specifications for SMS via GSM/GPRS
Point to point MO and MT
SMS cell broadcast
Text and PDU mode


Specifications for Voice
Tricodec
- Half rate (HR)
- Full rate (FR)
- Enhanced Full rate (EFR)
Hands-free operation
(Echo suppression)

Zentek Electronics & Communications Pvt Ltd is all set to break the barrier and redefine the established boundaries of the Electronics & Telecommunication market and is shifting the productivity frontier to new heights.

More details:View company website

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Main Markets:
South Asia
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