SIM900A GSM/GPRS Development Module – Wireless Communication Board for SMS, Voice, and Data Transmission with STM32, Arduino, and Microcontrollers
SIM900A GSM/GPRS Development Module – Wireless Communication Board for SMS, Voice, and Data Transmission with STM32, Arduino, and Microcontrollers
The SIM900A GSM Module Development Board is a reliable and feature-rich wireless communication solution designed for sending SMS messages, making voice calls, and transmitting GPRS data over GSM networks. Based on the SIMCom SIM900A chipset, this module supports dual-band GSM (900/1800MHz) and is ideal for IoT, automation, telemetry, and remote monitoring systems.
This fully integrated development board version includes essential components like voltage regulators, serial headers, SIM card holder, and antenna connectors, making it easy to integrate with STM32, Arduino, AVR, PIC, and other microcontroller platforms using standard AT commands via UART (TTL serial).
Key Features:
Module Chip: SIM900A by SIMCom
GSM Band Support: Dual-band 900/1800MHz (Asia, Africa, and selected regions)
Supported Functions:
Send/receive SMS
Make/receive voice calls
Transmit GPRS data (TCP/UDP/HTTP)
Control Interface: UART (TTL level, AT command set compatible)
SIM Card Slot: Standard SIM card support
Antenna Interface: External GSM antenna connector for strong signal reception
Operating Voltage: 5V input (regulated on-board)
Logic Level: 3.3V TTL (compatible with 3.3V microcontrollers; level shifting required for 5V logic)
Baud Rate: Default 9600 bps (configurable)
Status Indicators: Power and network status LEDs
Board Features:
Onboard voltage regulator and filtering
Reset and power buttons
Socket for external antenna
Easily breadboardable or mountable
Customize PCB
Customize PCB
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How to Request a PCB Layout/Design:
- Send your complete schematic or diagram via our Facebook page.
- We will assess your diagram and provide a quotation based on the complexity and requirements.
PCB Layout & Design Rules:
- All diagrams must be clear and properly labeled.
- Specify the desired board size, number of layers, and component types if applicable.
- Rush requests may incur additional charges.
- We do not accept hand-drawn or incomplete schematics.
- Files will be delivered in Gerber and/or PDF format as requested.
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