Introduction

A7 GPRS/GSM+GPS Shield is a shield based on A7 chip, it communicates with Catduino Uno via pins (RX, TX) with GPS data and GPRS data. Compared to the chip A6, A7 have additional function of satellite navigation, it supports GPS and GPRS/GSM, it’s convenient to connect to the internet through GPRS wireless network. The A7 GPRS/GSM+GPS can be also used to making/answering call, sending/receiving SMS messages and local the position.

Technical Data

Quad-band: 850/900/1800/1900MHz

GPS multi-slot class 12/12

GPRS mobile station class B

Compliant to GSM phase 2/2+

       Class 4(2W@850/900MHz)

       Class 1(1W@1800/1900MHz)

Supply voltage range: 3.4-4.4V, typical voltage: 4.0V.

Electric current: 1.3mA @ DRX=5

             1.2mA @ DRX=9

Operate temperature: -30℃ to +80℃

Controlled by AT command via UART

Data transmit

GPRS Class 10: max85.6kbps&min842.8kbps

Support USSD/PBCH

Support CSD: max14.4kbps

Protocol stack: PPP/TCP/UDP/HTTP/FTP/SMTP/MUX

Features

Opening voltage: >3.4V

Average current in sleep mode: <3mA
support: GSM, 2G in China mobile and China Union

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