The SIM800L GSM/GPRS module is a compact, low-power, quad-band cellular module that enables GSM-based communication through SMS, voice, and GPRS (mobile data). Designed for microcontroller compatibility via TTL serial communication, it supports applications like IoT devices, GPS trackers, SMS automation systems, and remote control systems. This module integrates an onboard antenna interface and operates reliably on a wide range of voltages with efficient power management.
Features
Quad-band GSM/GPRS: 850/900/1800/1900 MHz
Supports GSM voice calls, SMS, and GPRS data transfer
TTL-level serial communication (UART) for direct MCU interface
Built-in TCP/IP stack for Internet data connectivity
Compact size suitable for embedded IoT applications
Low power consumption — supports sleep mode
Onboard microphone and speaker interface pins
Antenna connection via IPEX connector or spring antenna
Supports AT command set (3GPP TS 27.007, 27.005)
Integrated power regulation and ESD protection
Compatible with Arduino, ESP32, Raspberry Pi, and STM32
