Description

The SIM900 GSM/GPRS Module is a versatile wireless communication solution designed for GSM voice, SMS, and GPRS data applications. Supporting quad-band GSM (850/900/1800/1900 MHz), it works across multiple regions worldwide. Controlled via standard AT commands, the module integrates a SIM card holder, UART serial interface, and SMA antenna connector, making it ideal for IoT, remote monitoring, and embedded communication projects.

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KEY FEATURES

• Quad-Band GSM/GPRS: Works on 850 / 900 / 1800 / 1900 MHz networks
• AT Command Control: Standard AT commands for calls, SMS, and data
• Built-in SIM Holder: Supports standard SIM cards
• Low Power Sleep Mode: Typical 1.5 mA consumption in sleep
• GPRS Data Support: Multi-slot Class 10 (default)
• External Antenna Support: SMA connector for improved signal strength
• UART Interface: Easy integration with microcontrollers

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SPECIFICATIONS

• Product Type: GSM/GPRS Communication Module
• Model: SIM900 / SIM900A
• Frequency Bands: GSM 850, EGSM 900, DCS 1800, PCS 1900
• GSM Class: Small MS
• GPRS Class: Multi-slot Class 10 (default), Class 8 (optional)
• Transmitting Power:
– Class 4 (2W) @ EGSM 900
– Class 1 (1W) @ DCS 1800
• Control Method: Standard AT Commands
• Interface: UART Serial (up to 115200 bps)
• SIM Interface: Standard SIM Card Holder
• Supply Voltage (Module): 3.4V – 4.5V
• Input Voltage (Board): 5V – 12V DC
• Power Consumption:
– Sleep Mode: ~1.5 mA
– Idle Mode: ~10 mA
• Operating Temperature: –30°C to +80°C
• Storage Temperature: –5°C to +90°C

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BENEFITS

• 📡 Worldwide Compatibility: Quad-band support enables global use
• 📶 Reliable Communication: Stable GSM voice, SMS, and GPRS data
• 🔋 Low Power Design: Ideal for battery-powered applications
• 🧠 Microcontroller Friendly: Simple UART + AT command interface
• 🌐 Internet Ready: Built-in TCP/IP stack for GPRS connectivity

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📦 PACKAGE INCLUDES

• SIM900 GSM/GPRS Module: 1 Unit