The 32u4 with A9G GPRS/ GSM/ GPS Board is based on Mega32u4 and A9 GPRS/ GSM/ GPS module. It can be used to make a call, send text message and get GPS positioning. Also it has one analog interface, one IIC interface and two digital interfaces, which you can connect to other expansion modules. It is very easy for you to make a GPS tracker by using this board, and it’s convenient to use AT firmware and use several AT commands that can be configures successful.

Features:

• ATMEGA32U4+A9G.
• Work voltage: 3.3V to 5V.
• Operating temperature： -30 ℃ to + 80 ℃.
• Three kinds of interface.
• Equipped with 3.5mm headphone jack.
• 3.7V Battery power supply.
• Standby average current 3ma or less.
• Support the GSM / GPRS/ GPS Quad-band, including 850,900,1800,1900MHZ.
• Support China Mobile and China Unicom's 2G GSM network worldwide.
• GPRS Class 10.
• Sensitivity < -105.
• Support GPS Positioning.
• Support for voice calls.
• Support for SMS text messaging.
• Support GPRS data business, the maximum data rate: download 85.6Kbps, upload 42.8Kbps.
• Supports standard GSM07.07, 07.05 AT commands and Ai-Thinker extended commands.
• Supports two serial ports, a serial port to download an AT command port.
• Support for Global Positioning System.
• Horizontal positioning accuracy of less than 2.5m.
• AT command supports the standard AT and TCP / IP command interface.
• Support digital audio and analog audio support for HR, FR, EFR, AMR speech coding.
• Support ROHS, FCC, CE, CTA certification.

Specifications:

• The size of A9G: 19.2*18.8*3mm
• Quad-band: 850/900/1800/1900 MHz.
• GPRS multi-slot: 12, 1 to 12 can be configured.
• GPRS mobile station: Class B.
• Compatible with GSM Phase 2/2 +: Class 4 (2W @ 850/900 MHz) Class 1 (1W @ 1800 / 1900MHz).
• Current consumption: 1.3mA @ DRX = 5; 1.2mA @ DRX = 9.
• AT command control: Standard GSM07.07, 07.05 AT commands and Ai-Thinker extended commands.
• SIM Application Toolkit.
• GPRS Class 10: Up 85.6 kbps (upstream) & 42.8Kbps (downlink).
• Dynamic Conditions Altitude <18>
• Speed <515>
• PBCCH support.
• Coding scheme: CS 1, 2, 3, 4.
• Support CSD: Up 14.4 kbps.
• Support USSD.
• Stack: PPP / TCP / UDP / HTTP / FTP / SMTP / MUX

Note:

• Make sure your SIM card is locked.
• This product is supplied as is, without an insulated housing. In high humidity weather, pay special attention to ESD precautions.
• It just supports baud rate: 115200 bps

Tutorial: https://www.elecrow.com/wiki/index.php?title=32u4_...