GSM-GPRS Module SIM900A for Arduino (Without Antenna)

The SIM900A is a dual-band GSM/GPRS module that allows microcontrollers like Arduino to connect to a cellular network for SMS, voice, and internet (GPRS) communication. This version does not include an external antenna but has a U.FL connector for attaching one. The module communicates over UART and is commonly used in IoT projects.

Key Features:

• Module: SIM900A (SIMCom)
• Bands Supported: GSM 900MHz & 1800MHz
• Communication: UART (TX, RX)
• Power Supply: 5V input (requires ~2A peak current)
• SIM Slot: Standard SIM card (2G)
• Antenna: Not included; U.FL connector available for external antenna
• Functions: SMS, voice call, GPRS data, AT command control
• Status LEDs: Network and power status indicators

Applications:

• SMS-controlled devices
• GPRS-based data transmission
• Remote monitoring and logging
• Home automation and IoT

📄 View Verified SIM900A Datasheet (PDF)