---
product_id: 426883643
title: "SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna"
brand: "robodo"
price: "€ 22.41"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.it/products/426883643-sim900a-gsm-gprs-module-with-rs232-interface-and-sma-antenna
store_origin: IT
region: Italy
---

# Quad-Band GSM 850/900/1800/1900MHz 12V Power Supply, 1-2A Range RS232 & TTL Interface Compatibility SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna

**Brand:** robodo
**Price:** € 22.41
**Availability:** ✅ In Stock

## Summary

> 📡 Stay connected, stay ahead — the GSM module that powers your next-gen projects!

## Quick Answers

- **What is this?** SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna by robodo
- **How much does it cost?** € 22.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/426883643-sim900a-gsm-gprs-module-with-rs232-interface-and-sma-antenna)

## Best For

- robodo enthusiasts

## Why This Product

- Trusted robodo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Power Handling:** Supports 12V power input with up to 2A current for stable, reliable operation under load.
- • **Plug & Play Versatility:** Effortlessly integrates with Arduino, Raspberry Pi, ARM, AVR, PIC, and 8051 platforms for rapid prototyping.
- • **All-in-One Communication Hub:** Make calls, send SMS, and transfer GPRS data with onboard MIC, LINE input, and SPEAKER output pins.
- • **Compact & Developer-Friendly:** Ultra-compact SMT design with configurable baud rates and multiple interface options including RS232 and TTL.
- • **Global Quad-Band Connectivity:** Seamlessly connect anywhere with 4GSM frequency support for uninterrupted communication.

## Overview

The SIM900A GSM GPRS Module by Robodo is a compact, quad-band cellular modem designed for seamless integration with popular microcontrollers and PCs. Featuring RS232 and TTL interfaces, it supports voice calls, SMS, and GPRS data transfer with flexible power input and onboard audio I/O pins. Ideal for professional developers and makers aiming to build reliable, global IoT and M2M communication solutions.

## Description

Description:- SIM900A Modem is built with Dual Band GSM based SIM900A modem from SIMCOM.  It works on frequencies 900MHz. SIM900A can search these two bands automatically.  The frequency bands can also be set by AT Commands.  The baud rate is configurable from 1200-115200 through AT command.  SIM900A is an ultra-compact and wireless module.  The Modem is coming interface, which allows you connect PC as well as microcontroller with RS232 chip (MAX232).  It is suitable for SMS, Voice as well as DATA transfer application in M2M interface.  The onboard Regulated Power supply allows you to connect wide range unregulated power supply.  Using this modem, you can make audio calls, SMS, Read SMS, attend the incoming calls and ect. Through simple AT commands.  This is a complete GSM module in a SMT type and made with a very powerful single-chip, allowing you to benefit from small dimensions. SIM 900A GSM Modem with serial and TTL outputs.  Specification:-  Quad-Band GSM/ 850/900/1800/1900MHz Compatible with arduino, raspberry pi, arm, avr, pic, 8051 Power supply 12v 1amp to 2 amps max Use in the area of full signal strength.  Perfect suited for GSM based Microcontroller Projects (better than SIM300 and other GSM Modems)  Option for connecting MIC and SPEAKER directly to GSM MODEM for calls (LINE IN also available)  Supports communication through RS232 with DB9 Connector, TTL Pins and I2C Pins CALL SMS GPRS facility - MIC input, LINE input and SPEAKER output pins Package Includes:-  1x SIM900 850/900/1800/1900 MHz GSM Development Board Module  1x SMA Antenna

## Features

- Quad-Band GSM/ 850/900/1800/1900MHz
- Compatible with arduino, raspberry pi, arm, avr, pic, 8051
- Power supply 12v 1amp to 2 amps max
- Use in the area of full signal strength.
- CALL SMS GPRS facility - MIC input, LINE input and SPEAKER output pins

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Robodo |
| Manufacturer | Bombay Electronics |
| Country of Origin | China |
| Model number | BE01075 |
| Colour | Multicolour |
| Modem Type | Cellular modem |
| Number of Memory Sticks | 1 |
| Item Weight | 20 g |
| Product Dimensions | 5 x 5 x 5 cm; 20 g |
| Item model number | BE01075 |
| Item Height | 50 Millimeters |
| Item Width | 50 Millimeters |
| Connectivity Technology | Serial, USB |
| Maximum upload transmission rate | 57.6 Megabits Per Second |
| Compatible Device | Personal Computer |
| Included Components | 1x SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna |

## Product Details

- **Brand:** Robodo
- **Connectivity Technology:** Serial, USB
- **Compatible Devices:** Personal Computer
- **Colour:** Multicolour
- **Maximum Upstream Data Transfer Rate:** 57.6 Megabits Per Second

## Images

![SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna - Image 1](https://m.media-amazon.com/images/I/61l1TaAczHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best to buy at this price
*by M***J on 18 May 2025*

Worth buying it

### ⭐ Didn't received antenna in the product
*by S***C on 7 April 2025*

I didn't receive the antenna in the gsm module

### ⭐⭐⭐⭐⭐ Good
*by A***O on 22 April 2025*

Good

## Frequently Bought Together

- SIM900A GSM GPRS Module with RS232 Interface and SMA Antenna
- Aptechdeals Jumper Wires Male To Male, Male To Female, Female To Female/ Breadboard Jumper Wires (40+40+40)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-26*