SIM900 GPRS/GSM Shield Development Board Quad-Band Module For Arduino Compatible

Features: 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) RTC supported. Selectable serial port. Speaker and Headphone jacks Low power consumption – 1.5mA(sleep mode) Application Ideas: M2M (Machine 2 Machine) Applicatoions Remote control of appliances Remote Weather station or a Wireless Sensor Network Vehicle Tracking System with a GPS module 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). Interface Introduction: 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 Package Included: 1 x GSM GPRS SIM900 Shield