SIM900A GSM/GPRS Modem with RS232 & Antenna

SIM900A GSM/GPRS Modem with RS232 & Antenna

Connect your projects to the cellular network with this industrial-grade SIM900A GSM/GPRS Modem. This all-in-one board is designed for ease of use and robust connectivity, making it simple to send SMS messages, make voice calls, or transfer data over the internet from your computer or microcontroller.

This modem is built around the reliable SIM900A GSM module and features a wide range of onboard connectors for maximum flexibility. A standard DB9 serial port allows for direct connection to a PC for easy testing and configuration using AT commands, while standard TTL UART pins are available for interfacing with microcontrollers like Arduino and Raspberry Pi. Powering the board is simple thanks to the onboard DC barrel jack.

With its straightforward interface and comprehensive feature set, this modem is a powerful tool for developing a wide variety of M2M (Machine-to-Machine) and IoT applications.

Key Features:

• Chip: SIMCom SIM900A
• Network Support: Dual-band GSM/GPRS (900/1800 MHz)
• Core Functions: SMS, Voice Calls, GPRS Data, DTMF
• Flexible Connectivity: Onboard DB9 (RS232) connector and TTL serial pins
• Easy Powering: DC barrel jack for standard power adapters (5V-12V range)
• SIM Card Slot: Full-Size SIM Holder
• Antenna Connector: SMA connector with included “Rubber Ducky” Antenna

Applications:

This modem is perfectly suited for applications like industrial automation, SMS gateways, remote monitoring and control systems, home security alerts, vehicle tracking, and other IoT projects where a reliable and easy-to-interface cellular link is required.