Original AI-thinker A9 GPRS + GSM SMS Voice Wireless Data Transmission Module

Original AI-thinker A9 GPRS + GSM SMS Voice Wireless Data Transmission Module Description

Overview:
1. The A9 development board is a multi-function development board based on the Axin A9G GPRS/GSM module, which can be used to verify the basic communication functions and peripheral functions of the A9 module.
2. A9 development board has basic telephone/sms, GPRS network communication.
3. A9 development board contains lithium battery charge management, microphone, speaker interface, USB communication interface, multiple user buttons / led, TF card slot, acceleration sensor, SPI interface, I2C2 interface, ADC interface.
4. Pudding series development board camera expansion board, can be connected to 30W/200W camera.
5. A9 development board slot machine expansion board, can be connected to a traditional coin machine.

Specifications:
Chip size: 19.2 x 18.8 x 2.7mm (0.2mm);
Working temperature: -30 C +80 C;
Working voltage: 3.5V-4.2V, 4V power supply is recommended;
Boot voltage: >3.5V;
Low power average current: below 2ma;
Support GSM/GPRS four frequency bands, including 850, 900, 1800, 1900MHZ;
GPRS Class: 10;
Sensitivity: <-105;
Support voice calls;
Support SMS SMS;
GPIO level: 2.8V;
Support GPRS data service, maximum data rate, download 85.6Kbps, upload 42.8Kbps;
Support standard GSM07.07, 07.05 AT commands and Ai-Thinker extension commands;
A9 supports 3 serial ports, one download serial port and one AT command port;
AT command supports standard AT and TCP/IP command ports;
Support digital audio and analog audio, support HR, FR, EFR, AMR voice coding.

Package Included:
1 xGPRS GSM Module A9 Module.