Features:

• Quad-band 850/900/1800/1900MHz
• GPRS multi-slot class12 connectivity: max. 85.6kbps (down-load/up-load)
• GPRS mobile station class B
• 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands
• Real Time Clock
• Power voltage 3.4V ~ 4.4V DC
• A-GPS (Assisted Global Positioning System)
• Supports 2.8V to 5.0V logic level
• Low power consumption, 1mA in sleep mode
• Compact size 23mm x 35mm x 5.6mm
• Standard SIM Card

Mini GSM / GPRS breakout board is based on SIM800L module, supports quad-band GSM/GPRS network, available for GPRS and SMS message data remote transmission.
The board features compact size and low current consumption. With power saving technique, the current consumption is as low as 1mA in sleep mode. It communicates with microcontroller via UART port, supports SIMCOM enhanced AT Commands.

Pinout description

There are 12 total pins on the small SIM800L two parallel rows of six headers. One row contains all of the pins required to interface with Arduino, the other row has all things for interface.

• GND: Ground for SIM800L
• VCC:  Supply Voltage input for  SIM800L
• RST: Reset pin for SIM800L
• RXD: Serial communication (Receiver Pin)
• TXD: Serial communication  (Transfer Pin)
• NET: Antenna
• RING: Low state while receiving call
• DTR: Sleep mode
• MICP: Microphone +
• MICN: Microphone –
• SPKP: Speaker +
• SKPN: Speaker –