A9G GSM/GPRS/GPS module by Ai-thinker is an integrated IoT solution that supports dual band GSM/GPRS network and at the same time It has an embedded GPS module. If your project involves both GSM and GPS module then the A9G GSM GPS is a good choice.

The board features compact size and low current consumption. With power saving capabilities, the current consumption is as low as 3mA in sleep mode. It communicates with microcontroller via UART port supports AT commands.

The A9G by default comes with a bootloader or firmware and hence it can be controlled using AT commands through Arduino, ESP8266, and Raspberry Pi as well. It can be used to connect modules such as Arduino and Raspberry Pi to the internet and can be used in a wide range of IoT applications and is ideal for IoT applications for home automation, industrial wireless control, wearable electronics, wireless location sensing devices, wireless location system signals, and other IoT applications.

Specification

Module: Ai Thinker A9G
Operating Voltage: 3.3V – 4.2V
Operating Temperature: -20℃~+70℃
Low Power Mode Current: 2mA below (average)
Supports for Quad-band GSM/GPRS(850/900/1800/1900MHz)
GPRS Class 10
Sensitivity: <-105dB
Supports for Voice call and SMS
GPIO Level: 2.8V
Supports GPRS data service, the maximun download data rate is 85.5kbps, upload rate is 42.8Kbps
Supports standard GSM07.07,07.05 AT command and Ai-Thinker expandable command set
AT command supports standard AT&TCP/IP command port

Board Overview

Connection

Connect usb-ttl with 4 wires when debugging, VUSB-5V; GND-GND; AT_TX-RX; AT_RX-TX
Or power supply by USB, then connect another three lines, GND-GND; AT_TX-RX; AT_RX-TX
Or power by lithium battery, VBAT-(3.3v-4.2) V; GND-GND; AT_TX-RX; AT_RX-TX; (VBAT power supply, need to press power_key button for about 2s)