SIM900 GSM/GPRS Module

The SIM900 GSM Module is a compact and reliable GSM/GPRS communication module designed for wireless voice, SMS, and data transmission applications. Based on the SIM900/SIM900A chipset, this module enables microcontrollers and embedded systems to communicate over the GSM cellular network.

It supports quad-band GSM frequencies, making it suitable for a wide range of IoT, automation, security, and remote monitoring applications. The module communicates using standard AT commands through a UART serial interface, allowing easy integration with Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller platforms.

The SIM900 GSM Module can send and receive SMS messages, make voice calls, access GPRS internet services, and support TCP/IP communication for IoT projects.

Technical Specifications:

• Product Name: SIM900 GSM/GPRS Module
• Module Type: GSM/GPRS Wireless Communication Module
• Chipset: SIM900 / SIM900A
• Network Support: 2G GSM/GPRS
• Frequency Bands:
  • GSM 850MHz
  • EGSM 900MHz
  • DCS 1800MHz
  • PCS 1900MHz
• Communication Interface: UART Serial Communication
• Supported Baud Rate: 1200bps – 115200bps
• Default Baud Rate: 9600bps
• Command Protocol: AT Commands
• Operating Voltage: 3.4V – 4.5V DC

Features:

• Supports GSM voice communication
• Send and receive SMS messages
• GPRS internet connectivity support
• Standard AT command interface
• Quad-band GSM network compatibility
• Compact and lightweight design
• UART serial communication for easy interfacing
• External antenna support for improved signal reception
• Low power sleep mode support
• Built-in SIM card holder
• Supports TCP/IP stack communication
• Easy integration with microcontrollers and embedded systems
• Reliable wireless communication module for IoT applications
• LED indicators for network and power status

Applications:

• IoT and embedded systems
• SMS-based automation systems
• Wireless remote monitoring
• GSM-based home automation
• Vehicle tracking systems
• Industrial automation
• Security and alarm systems