Quad-Band 850 / 900/ 1800 / 1900 MHz – would work on GSM networks in all countries across the world.
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)
Control via AT commands – Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands.
Short Message Service – so that you can send small amounts of data over the network (ASCII or raw hexadecimal).
Embedded TCP/UDP stack – allows you to upload data to a web server.
Selectable serial port.
Speaker and Headphone jacks
Low power consumption – 1.5mA(sleep mode)
Industrial Temperature Range – -40°C to +85 °C
M2M (Machine 2 Machine) Applications.
Remote control of appliances.
Remote Weather station or a Wireless Sensor Network.
Vehicle Tracking System with a GPS module.
Make sure your SIM card is unlocked.
The factory default setting for the GPRS Shield UART is 19200 bps 8-N-1. (Can be changed using AT commands).
Power select – select the power supply for GPRS shield(external power or 5v of arduino)
Power jack – connected to external 4.8~5VDC power supply
Antenna interface – connected to external antenna
Serial port select – select either software serial port or hareware serial port to be connected to GPRS Shield
Hardware Serial – D0/D1 of Arduino
Software serial – D7/D8 of Arduino
Status LED – tell whether the power of SIM900 is on
Net light – tell the status about SIM900 linking to the net
UART of SIM900 – UART pins breakout of SIM900
Microphone – to answer the phone call
Speaker – to answer the phone call
GPIO,PWM and ADC of SIM900 – GPIO,PWM and ADC pins breakout of SIM900
Power key – power up and down for SIM900
The SIM900 Board Input is 5-26V 2A,We Recommended current is more than 9V 2A
Ensure your SIM card is not locked
GPRS Shield Communication baud rate is 19200 BPS 8-N-1
The GSM GPRS card model that was used does not include the pins to mount it directly on the ARDUINO but it will not cause problems in the connection since it is controlled by UART we only need TX and RX.