SIM800l GSM Module Review

Introduction

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.

Description

LoNet 800L is a mini GSM module that offers 2G GSM and GPRS data. It features small size and low power consumption. Twice size as a coin and the working current low to 1mA when in sleep mode. It uses a serial port communication, supports 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands. Also, it supports A-GPS technique that help get indoor position by the mobile network.
Works compatible with Arduino Uno, Arduino Mini, Raspberry Pi. A mini GSM antenna is came with, but an external power supply is required.

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 –

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