> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# A9 GSM/GPRS Module

**Type:** Product page · **SKU:** TEL0135 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/a9-gsm-gprs-module.html ([markdown](https://core-electronics.com.au/a9-gsm-gprs-module.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

#### **This is a 2G device. As the 2G networks in Australia have been dismantled, this device will no longer work in Australia.**

#### Introduction

A9 is a complete quad-band GSM/GPRS module based on RDA8955. The cost reduction of the core chip provides users a cost-effective IoT solution. Integrating protocol stacks such as GSM/GPRS inside, this module supports the basic phone voice call/SMS, serial to GPRS and GPS data transmission functions, which can be used in a wide range of applications, such as [IoT](https://www.dfrobot.com/topic-276.html), vehicle-mounted equipment, remote localization, electric power environment monitoring.

The module allows users to make voice call, use SMS services and access the internet and base position with only a SIM or IoT card. A9 could also work with other devices by AT command. Besides, the module comes with 29 GPIOs and integrated SDK that could greatly facilitate private redevelopment.

 ![A9-GSM-GPRS-Module-desc-img](https://core-electronics.com.au/media/wysiwyg/product_images/A9-GSM-GPRS-Module-desc-img.jpg)#### Features

- 32 bit RISC core, frequency up to 312MHz, with 4k instruction cache, 4k data cache
- Up to 29 GPIOs (with two download pins)
- PMU(Power Management Unit): Lithium battery charge management, integrated DC-DC and LDOs
- Quad-band GSM/GPRS (850/900/1800/1900MHz)
- Voice call
- SMS
 
#### Specification

- Working Temperature: -20℃+70℃
- Low Power Mode Current: 2mA below (average)
- GPRS Class 10
- Sensitivity<-105dB
- GPIO Level: 2.8V
- Supports GPRS data service, the maximum download data rate is 85.6 Kbps, upload data is 42.8 Kbps.
- Supports standard GSM07.07,07.05 AT command and Ai-Thinker expandable command set
- AT command supports standard AT & TCP/IP command Port
 
#### Documents

- [Product wiki](https://wiki.dfrobot.com/A9G_Module_SKU_TEL0134)
 
#### Shipping List

- A9 Module ×1
- GSM Antenna ×1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/t/e/tel0135-1.jpg)