SIM900 Quad-Band GSM GPRS Shield with Antenna

SIM900 GSM GPRS shield is based on a chip of SIM900 from SIMCOM and is compatible with Arduino and its clones. It is used to make and receive phone calls, send and receive SMS and connect to the internet using the GPRS network via UART using AT commands. It supports quad-band and can communicate through GSM 850 MHz, GSM 900 MHz, DCS 1800 MHz or PCS 1900 MHz networks. It has a power jack along with a toggle switch to use an external power supply.

SIM900 shield can be powered by a 5V power supply that can provide 2A current or 9V, 1A or 12V, 1A supply. It is equipped with a microphone and speakers jack for phone calls. At the backside of the shield, there is a sim card jack and a holder for a 3V CR1220 battery for the RTC (real-time clock). After insertion of sim and battery, the shield can be mounted on top of the Arduino board.

• 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.
• RTC supported.
• Selectable serial port.
• Speaker and Headphone jacks
• Low power consumption – 1.5mA(sleep mode)
• Industrial Temperature Range – -40°C to +85 °C

Cautions:

• Make sure your SIM card is unlocked.
• The product is provided as is without an insulating enclosure. Please observe ESD precautions specially in dry (low humidity) weather.
• 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