SIM800L V2 TTL Module

The SIM800L V2 TTL Module is a compact GSM/GPRS communication module designed for cellular connectivity in embedded and IoT projects. It supports quad-band GSM networks, enabling voice calls, SMS, and GPRS data transmission. With a TTL-level UART interface, it can be easily connected to microcontrollers such as Arduino, ESP32, or STM32. The module is commonly supplied with an external antenna to improve signal reception and reliability.

Technical Specifications:

GSM bands: Quad-band 850 / 900 / 1800 / 1900 MHz
Communication: GSM voice, SMS, GPRS data
Interface: UART (TTL level, TX/RX)
Operating voltage: Typically 3.7 V to 4.2 V (Li-ion compatible)
Peak current consumption: Up to ~2 A during transmission bursts
SIM card support: Standard SIM
Antenna interface: External antenna via connector
Operating temperature: Approximately −40 °C to +85 °C

Features:

Compact and lightweight GSM/GPRS module
Supports voice calls, SMS, and TCP/IP over GPRS
TTL serial interface for easy microcontroller integration
Low power consumption in idle and sleep modes
External antenna support for improved signal strength
Widely supported with AT command set

Applications:

IoT and M2M communication systems
Remote monitoring and control projects
SMS-based alert and notification systems
GSM-enabled data loggers
DIY electronics and embedded communication projects

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SIM800L V2 TTL Module