SIM900A GSM Module – Powerful & Reliable IoT Connectivity

The SIM900A GSM/ module is a high-performance GSM/GPRS communication solution designed for seamless network connectivity in IoT, robotics, and automation projects. This dual-band module operates on EGSM 900MHz and DCS 1800MHz frequencies, offering stable and reliable communication for both personal and industrial applications. Compact, energy-efficient, and versatile, it’s the ideal choice for developers seeking dependable connectivity.

Compact, Durable Design

Measuring 12.1 x 10.6 x 0.2 cm, the SIM900A GSM module combines a small footprint with robust performance. Built from high-quality materials, it withstands extreme temperatures (-30ºC to +80ºC) and harsh environmental conditions. Its reliability makes it perfect for long-term deployment in IoT, home automation, and industrial projects.

Seamless Integration with Microcontrollers

The SIM900A GSM/GPRS Module supports standard AT commands, allowing for seamless integration with popular development boards such as Arduino, AVR, and Raspberry Pi. Its adjustable baud rate, from 1200 to 115200 bps, ensures flexible communication speed for various applications. Developers can quickly connect, configure, and manage GSM/GPRS functionality, whether sending SMS alerts, transmitting sensor data, or controlling remote devices.

For extended IoT capabilities, you can explore related modules, such as Arduino UNO R4 Minima, Arduino GIGA R1 WiFi, or Arduino Nicla Vision.

Energy-Efficient Performance

With a low SLEEP mode current of only 1.5mA, the GSM SIM900A module is designed for energy-efficient projects, making it ideal for battery-powered devices and remote IoT systems. Efficient power usage reduces operational costs while extending project life, ensuring continuous operation without compromise.

Advanced GPRS Data Transmission

The SIM900A GSM/GPRS Module supports GPRS multi-slot class 10/class 8 and coding schemes CS-1 to CS-4, providing reliable and efficient data transmission. From SMS-based automation to IoT device management, the module ensures fast and secure communication between devices, making it suitable for M2M systems, remote monitoring, and real-time control.

Applications

The SIM900A GSM module is highly versatile, supporting applications such as:

• IoT and M2M communication systems for smart devices

• Remote monitoring and control in homes and industries

• SMS-based automation projects for wireless device control

• GPS tracking systems (when combined with a GPS module)

• Home and industrial security systems

• Wireless data transmission in smart agriculture to monitor soil and crop conditions

• Arduino & Raspberry Pi IoT projects requiring GSM connectivity

Frequently Asked Questions

Q1: What is a SIM900A GSM module, and how does it work?
The SIM900A GSM module allows devices to send SMS, make calls, and transmit data using GSM networks. It works with controllers like Arduino, Raspberry Pi, and AVR via AT commands, making integration simple for IoT projects.

Q2: How do I connect a SIM900A GSM/GPRS Module with Arduino?

Connect via TX/RX pins and use AT commands or Arduino libraries to send SMS, make calls, or transfer data. Ideal for IoT automation projects and remote monitoring systems.

Q3: Can the GSM SIM900A module be used for IoT and M2M applications?
Yes, it supports reliable data transmission and low-power operation, perfect for smart agriculture, industrial monitoring, and home automation.

Q4: Does the SIM900A GSM module support GPS tracking?
The module itself does not provide GPS, but can pair with a GPS module for tracking vehicles, logistics, or assets while handling GSM communication.

Q5: What are the power requirements of the SIM900A GSM/GPRS Module?
Operates on 3.4–4.5V with very low power consumption (~1.5mA in sleep), making it suitable for long-term battery-powered IoT deployments.

Q6: Is the SIM900A GSM module compatible with Raspberry Pi?
Yes, via UART or USB-to-Serial connections. Python libraries allow sending AT commands for SMS, calls, and GPRS communication.

Q7: Where can I buy genuine GSM SIM900A modules in India?
Purchase from Ezyki for authentic modules with expert support. You can also explore other Arduino solutions like Arduino Nano 33 IoT and Arduino Nano Original A000005. For company updates, follow Ezyki on LinkedIn.

Package Includes:

• 1 x SIM900A GSM/GPRS Module with Antenna

Specifications: