SIM800L Wireless Quad-Band Module (GSM/SMS/GPRS)

Description

The SIM800L Wireless Quad-Band Module is a highly compact, low-power cellular communication module designed for embedded systems and IoT projects. This miniature breakout board functions similarly to a cell phone, allowing microcontrollers like Arduino to connect globally over GSM/GPRS networks to transmit voice calls, send SMS text messages, and access internet data.
## Key Features

* Global Quad-Band Coverage: Operates on the 850/900/1800/1900 MHz frequencies, making it compatible with global 2G cellular networks.
* GPRS Data & Internet: Integrates an onboard TCP/IP stack to support cellular data via GPRS (multi-slot class 12/10), allowing HTTP, TCP, and UDP communication protocols.
* Audio Capabilities: Equipped with analogue digital audio interfaces for external microphone and 8-ohm speaker connections to facilitate full voice-call functionality.
* Compact Footprint: Miniature form factor optimized for space-constrained tracking devices and remote sensor enclosures.

## Technical Specifications

* Core Chipset: SIM800L Cellular Modem
* Operating Voltage: 3.4V to 4.4V DC (Recommended: 4.0V)
* Peak Operating Current: 2.0A+ (Required during high-power network connection burst cycles)
* Power Consumption: < 2.0mA in Sleep Mode, ~7.0mA in Idle Mode
* SIM Interface: Bottom-mounted MicroSIM card slot
* Antenna Options: IPX connector for external high-gain antennas or direct-solder NET pin for helical/wire antennas
* Communication Interface: UART serial interface utilizing AT commands
* Baud Rate Support: 2400 bps to 115200 bps with automatic detection
* Onboard Indicators: Built-in LED status signaling (fast flash for network hunting, slow flash for active network connection)
* Operating Temperature: -40°C to +85°C

## Common Applications

* Internet of Things (IoT) field nodes
* Remote data logging and environmental sensor systems
* Asset and GPS vehicle tracking systems
* SMS-controlled automation or security alert notification systems