GSM SIM900A LOW COST

DESCRIPTION

PRODUCT NAME: GSM SIM 900A

PRODUCT DESCRIPTION:

         GSM SIM 900A USB shield is a handy solution for your GSM/GPRS interface needs. You may connect it to a Laptop/Desktop computer with USB or RS232 connection. Also there is a TTL breakout for directly connecting it to microcontrollers like AVR, Arduino, PIC, ARM etc.

                   GSM/GPRS Modem-RS232 is built with Dual Band GSM/GPRS engine- SIM900A, works on frequencies 900/ 1800 MHz. The Modem is coming with RS232 interface, which allows you connect PC as well as microcontroller with RS232 Chip(MAX232). The baud rate is configurable from 9600-115200 through AT command. The GSM/GPRS Modem is having internal TCP/IP stack to enable you to connect with internet via GPRS. It is suitable for SMS, Voice as well as DATA transfer application in M2M interface. The onboard Regulated Power supply allows you to connect wide range unregulated power supply . Using this modem, you can make audio calls, SMS, Read SMS, attend the incoming calls and internet ect through simple AT commands.

 FEATURES :

  • Dual band GSM/GPRS 900/1800MHz.
  • Configurable baud rate.
  • SIM card holder.
  • Built in network status LED.
  • Inbuilt powerful TCP/IP protocol stack for internet data transfer over GPRS.

APPLICATIONS :

  • Access control devices.
  • Supply chain management Diagram

 

SPECIFIACATION:

Parameter

Value

Operating  Voltage

+12V DC

Weight

<140g

 

PIN SPECIFICATION:

Pin

Name

Details

1

GND

Power supply ground

2

tx

transmitter

3

rx

receiver

4

Line_r & Line_l

Line input

5

Spk_p & spk_n

Speaker positive & negative

6

Mic_p & mic_n

Mic positive & negative

7

DTR

Data terminal ready

8

CTS

Clear to send

9

RTS

Request to send