Description
Product Title
SIM900A GSM/GPRS Module – Wireless Communication Module
Product Description
The SIM900A GSM/GPRS Module is a reliable and cost-effective wireless communication module designed for IoT, automation, remote monitoring, and tracking applications. It supports voice calls, SMS messaging, and GPRS data transmission over GSM networks, making it ideal for embedded systems requiring cellular connectivity.
Featuring a simple UART interface and support for standard AT commands, the SIM900A can be easily integrated with Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller platforms. Its stable performance and easy setup make it a popular choice for both educational and industrial projects.
Key Features
✔ Supports GSM/GPRS Communication
✔ Send and Receive SMS Messages
✔ Voice Call Functionality
✔ GPRS Data Transmission Support
✔ UART Serial Communication Interface
✔ Standard AT Command Support
✔ Dual-Band GSM Operation
✔ External Antenna Support
✔ Low Power Consumption
✔ Easy Integration with Microcontrollers
✔ Reliable Wireless Connectivity
✔ Suitable for IoT and Automation Projects
Technical Specifications
| Parameter | Specification |
|---|---|
| Module Model | SIM900A |
| Network Type | GSM/GPRS |
| GSM Frequency | 900MHz / 1800MHz |
| Communication Interface | UART Serial |
| Supply Voltage | 4.5V – 5V DC |
| GPRS Multi-Slot Class | Class 10 |
| AT Command Support | Yes |
| SIM Card Type | Standard SIM |
| Antenna | External GSM Antenna |
| Data Services | SMS, Voice, GPRS |
| Operating Temperature | -40°C to +85°C |
| Dimensions | Compact Development Module |
Package Includes
✔ 1 × SIM900A GSM/GPRS Module
✔ 1 × GSM Antenna
Important Information
- Requires a valid GSM SIM card for operation.
- Ensure adequate power supply for stable communication performance.
- Network compatibility depends on local GSM service availability.
- Product images are for illustration purposes only. Actual product may vary slightly depending on manufacturer revisions.





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